**USB Data Blocker**<br>[](https://amzn.to/2HDArRP) | There are many exploits that allow an attacker to infect your device with malware and/ or steal data, when you plug it in to what appears to be a USB power outlet. If you are charging your phone while travelling, a USB data blocker will prevent anything other than power from getting to your device, by removing the connection between the 2 data wires. The PortaPower brand, also comes with a fast charging chip, since without the data connection your device would otherwise charge at minimum speed
**Microphone Blocker**<br>[](https://amzn.to/2uQ3r5L) | A microphone blocker is a device that prohibits audio hacking, in the form of a hardware accessory for a smartphones, laptops etc. It functions as a dummy mic jack, so the device thinks it has a microphone plugged in, and hence disables the internal one
**Faraday Pouch**<br>[](https://amzn.to/3bIkfw4) | [Faraday Shield](https://en.wikipedia.org/wiki/Faraday_cage) is an enclosure that blocks electromagnetic fields. It is useful to keep any device which could be hacked through sending or receiving signals in such a case, such as car keys, or a smart phone. [Larger](https://amzn.to/2UTZOGM) versions are availible for tablets and latops.
**RFID Blocking Cards**<br>[](https://amzn.to/38ycMxN) | If you are concerned about card skimming, you can use an RFID blocking sleeve to protect your contactless payment and identity cards. However there are proportionately very few RFID-skimmer crimes reported, and most credit cards have a low contactless limit
**Web Cam Covers**<br>[](https://amzn.to/2uEz16H) | Web cam covers are quite self-exoplanetary, they physically conceal the lenses on your laptop or phone camera, to prevent a malicious actor (hacker, government, corporation etc) from watching you through the camera. It may sound paranoid, but unfortunately it happens, and it is a relatively simply process for someone to gain remote access to a webcam. Even Mark Zuckerberg [covers his webcam](https://www.geek.com/tech/mark-zuckerberg-tapes-up-his-webcam-and-snowden-says-you-should-too-1659083/)! Of course you could just use some tape, rather than buying a cover
**Port Blockers**<br>[](https://amzn.to/327Yn9n) | There are many attacks that involve an attacker inserting a USB device (such as a BadUSB/ Rubber Ducky/ Malduino) to an open USB port. Adding a port blocker doesn't render you safe from this, since the attacker could take the time to try and remove it, but it could protect you for an opportunistic attack
**Privacy Filter**<br>[](https://amzn.to/3bAa9xv) | Privacy filters are polarized sheets of plastic, that when placed over a computer screen prevent screen visibility from any angle other than straight on. They make it harder for anyone to look over your shoulder and see your data confidential
**YubiKey**<br>[](https://amzn.to/38wcG9R) | The YubiKey is a small hardware device used to secure access on mobile devices, computers, and servers to all of your online accounts. It allows for second-factor authentication, hence protecting anyone other than you from logging in. It is said to be more convenient and more secure than using a mobile authenticator, but there are reasons for and against
**Encrypted Kingston Data Traveler**<br>[](https://amzn.to/38xsnO5) | Good value, easy-to-use with no installation required. Built-in hardware encryption and high password protection. Also optionally allows for automatic cloud backup option to protect against data loss (which doesn't say much about their faith in this USB device, but jokes aside-) this is a very affordable and well rated little device
**Hardware Encrypted USB 3.0 Drive**<br>[](https://amzn.to/2vD32Ug) | OS & Platform independent, with 100% hardware encryption, so it works perfectly with all operating systems. USB 3.0 with Read/Write Speeds of 116/43 MBps. GDPR complient and FIPS 140-2 Level 3, NLNCSA DEP-V & NATO Restricted Level Certified with real time military grade AES-XTS 256-bit hardware encryption
**Hardware Encrypted External Hard Drive**<br>[](https://amzn.to/37pTmK8) | Similar to the iStorage hardware encrypted USB 3.1 drive, this external hard drive has high capacity and strong hardware encryption. Data is encrypted with FIPS PUB 197 Validated Encryption Algorithm, and against a 7 - 15 digit alpha-numeric pin, with erasing capabilities for multiple failed login attempts
**Fingbox - Home Network Monitoring**<br>[](https://amzn.to/2V5gATx) | Fing Box is an optional companion to the [Fing App](https://www.fing.com/products/fing-app). It provides network monitoring and security capabilities, to protect your home/ work network. As well as the functionality of the app, the FingBox allows you to block intruders and notify you about unknown devices as well as analyse your network for vulnerabilities, such as open ports. You can also see which devises are near your home at what time (even if they're not connected to your WiFi), and improve network speed with scheduled analysis and bandwidth allocation. Best to try out the Fing app alone, before buying the FindBox, but both are great products for netowrk monitoring and security
**Bootable Drive Eraser**<br>[](https://amzn.to/2SsL67Y) | Easy-to-use bootable USB will completely erase your hard drive with military grade destruction, making it near-impossible for any files or personal data to be recovered. This should be done before you sell, or dispose of any hard drive. Of course there are various .ISOs you can download and flash to a USB yourself if you do not want to spend money, but this USB supports all devices and is quick and easy to use, with excellent results
**Mobile Privacy Screen**<br>[](https://amzn.to/2OZO3Lc) | Similar to the laptop/ monitor privacy filter, this screen protector will prevent anyone from seeing what is on your screen when reading from an angle
**Kensington Lock**<br>[](https://amzn.to/38zu0e2) | Quite self-explanatory, this lock will make it harder for someone to steal your laptop, and get to your data. Of course it does require that your laptop has the [Kensington Security Slot](https://en.wikipedia.org/wiki/Kensington_Security_Slot), which many do
**Anti-Surveillance Clothing**<br>[](https://adversarialfashion.com) | Facial recognition is being rolled out in most countries now, the patterns on these clothes, will confuse facial, object and number plate recognition, injecting junk data in to the systems, hence making it harder for automated systems to monitor and track you
**Solo Key**<br>[](https://amzn.to/37CsOpj) | Another FIDO2 physical security key for 2-facto authentication and storing encryption keys. SoloKeys have both open source hardware and software, they are easy to use out of the box, but can also be used for developers and makers, since there is a well documented CLI
**Nano Ledger**<br>[](https://amzn.to/37q1cn6) | If you are in possession of BitCoin or other crypto then one of the most secure ways to store, send and receive coins is with a hardware wallet. Ledger has a solid reputation when it comes to hardware encryption, and the main principle behind their wallets is to provide full isolation between the private keys and your easy-to-hack computer or smartphone
**Cold Storage**<br>[](https://amzn.to/2HqVy9x) | If you are not planning on spending your crypto any time soon, and do not want to trust a tech-based solution, then consider this metal cold storage wallet. Unlike writing your private key down on paper, this will not fade, and cannot be destroyed by water, fire of other environmental circumstances. Of course you could just engrave your key on a small sheet of aluminium
**Anonabox**<br>[](https://amzn.to/2UWtP8E) | Plug-and-play Tor router, that can be used with public WiFi while travelling, or at home. Anonabox provides easy access to the deep web and lets you bypass censorship, protect your location, deter data collection and more. It can also be used with a VPN, or for online hosting. Of course you could build a similar product your self using a Raspberry Pi and a WiFi range extender
**Deauth Detector**<br>[](https://amzn.to/2HtUy4B) | Most WiFi hacks begin by sending deauth packets, so that connected clients will briefly be disconnected to the network. This [ESP8266](https://en.wikipedia.org/wiki/ESP8266) comes pre-flashed with [@SpaceHuhn's](https://github.com/spacehuhn) deauth detector (which you can view [here, on GitHub](https://github.com/spacehuhn/DeauthDetector)). Once it detects [deauthentication or disassociation frames](https://mrncciew.com/2014/10/11/802-11-mgmt-deauth-disassociation-frames), it will activate a speaker to notify you
**Librem 5**<br>[](https://shop.puri.sm/shop/librem-5/) | Security and Privacy focused smart phone by Purism. With hardware kill switches and specially designed software, this device runs Linux, and does not track you. It Separates CPU from Cellular Baseband, uses IP-Native Communication First and Decentralized Communication by Default. The source code is user-controlled, and has layered security protection. Purism also have [other security-focused products](https://puri.sm/products)
Don't want to spend money? Most of the products above, plus some that wearn't included can be built at home with some pretty simple hardware and open source software. The following list will point you in the right direction to start making!
- **Network-wide add-block** - [Pi Hole](https://pi-hole.net) is a simple yet powerful app, that can be installed on a [Raspberry Pi](https://amzn.to/36GNpsm), and once you've updated your routers DNS servers to point to it, all resources on the blacklist will be blocked, at the point of origin. This makes it much more powerful than a browser add-on, and will also speed your internet up
- **Encrypted USB** - You can use [VeraCrypt](https://www.veracrypt.fr/en/Home.html) to create an encrypted USB drive, using any off-the shelf [USB drive](https://amzn.to/2RykcLD)
- **USB Sanitiser** - [CIRCLean](https://www.circl.lu/projects/CIRCLean) is a hardware solution to clean documents from untrusted (obtained) USB drives. It automatically converts untrusted documents into a readable but disarmed format and stores these clean files on a trusted (user owned) USB key/stick.
- **Home VPN** - [Pi_VPN](https://www.pivpn.io) lets you use [OpenVPN](https://openvpn.net) to connect to your home network from anywhere, through your [Pi](https://amzn.to/2uniPqa). See [this guide](https://pimylifeup.com/raspberry-pi-vpn-server) for set-up instructions. This will work particularly well in combination with Pi Hole.
- **USB Password Manager** - Storing your passwords in the cloud may be convinient, but you cannot ever be certain they won't be breached. [KeePass](https://keepass.info/help/v2/setup.html) is an offline password manager, with a portable ddition that can run of a USB. There's also an [app](https://play.google.com/store/apps/details?id=com.korovan.kpass). See also [KeePassX](https://www.keepassx.org) and [KeePassXC](https://keepassxc.org) which are popular communnity forks with additional functionality
- **Automated Backups** - [Syncthing](https://syncthing.net) is a privacy-focused continuous file synchronization program. You can use it to make on-site backups as well as encrypted and sync your data with your chosen cloud storage provider
- **Bootable Drive Eraser** - You can flash the [DBAN](https://dban.org) or [KillDisk](https://www.killdisk.com/bootablecd.htm) ISO file onto a USB, boot from it and securly, fully wipe your hard drives. This is useful to do before selling or disposing of a PC.
- **Deauth Detector** - Since most wireless attacked begin by sending out deauthentication packets, you can flash SpaceHuhns [DeatuhDetector](https://github.com/spacehuhn/DeauthDetector), onto a standard [ESP8266 NodeMCU](https://amzn.to/2v5grV0), plug it in, and wait to be notified of wireless deauth attacks
- **Tor WiFi Network** - Using [OnionPi](https://github.com/breadtk/onion_pi), you can create a second wireless network, that routed traffic through Tor. This is very light-weight so can be done with just a [Pi Zero W](https://amzn.to/2Urc0hM). Here is a configuration [guide](https://www.sbprojects.net/projects/raspberrypi/tor.php)
- **Faraday Case** - If you want to block signals for devices such as car keys, smart phone, laptop or even just RFID-enabled cards and passports, you can line a box or pouch with [Faraday Fabric](https://amzn.to/2ORKtTr)
- **GPS Spoofer** - If you don't want to be tracked with GPS, then using a SDR you can send out spoof GPS signals, making near-by GPS-enabled devices think that they are in a totally different location. (Wouldn't recommend using this while on an airplane though!). You can use [gps-sdr-sim](https://github.com/osqzss/gps-sdr-sim) by [@osqzss](https://github.com/osqzss), and run it on a [Hacker RF](https://greatscottgadgets.com/hackrf) or similar SDR. Here's a [guide](https://www.rtl-sdr.com/tag/gps-spoofing) outlineing how to get started, you'll also need a [NooElec HackRF One](https://amzn.to/2Ta1s5J) or similar [SDR](https://amzn.to/39cLiOx). Check your local laws first, you may need a radio license.
If you are confident with electronics, then you could also make:
- **USB Data Blocker** - By simple removing the data wires from a USB adapter, you can create a protector to keep you safe while charing your device in public spaces. See [this guide](https://www.instructables.com/id/Making-a-USB-Condom) for more info (note: fast charge will not work)
- **Hardware Encrypted Password Manager** - Even better than a software-encrypted password manager, is the [hardpass0.2](https://bit.ly/3bg4Xi4) which is a very simple hardware-encrypted USB store, using [GnuPG Smart card](https://www.g10code.com/p-card.html), [GNU Password Standard](https://www.passwordstore.org/) and this [source code](https://github.com/girst/hardpass-passwordmanager) all running on a [Pi Zero](https://amzn.to/2Sz0vU4). See also the [Zamek Project](https://bit.ly/36ZJrec), using this [source code](https://github.com/jareklupinski/zamek) to achive a similar functioning hardware-password manager
- **U2F USB Token** - Similar to the FIDO2 2-factor authentication USB keys, [U2f-Zero](https://github.com/conorpp/u2f-zero) by Conor Patrick, lets you turn a Pi Zero into a second-factor auth method. Note: project no longer activley maintained, see [NitroKey](https://github.com/nitrokey) instead
- **PC auto-lock Flash Drive** - Turn a flash drive into a lock/ unlock key for your PC, allowing you to quickly lock your device when needed [deprecated]
- **Headless Pi Zero SSH server** - Create an small test server, that you can SSH into for development, in order to not have to run risky or potentially dangerous code or software directly on your PC, see [this artticle](https://openpunk.com/post/5) for getting started
We can go even further, these products are far from essential and are maybe a little over-the-top. But fun to play around with, if you really want to avoid being tracked!
- **Self-Destroying PC** - The ORWL PC will wipe all data if it is compromised, and has many other safeguards to ensure no one other than you can access anything from your drive. Comes with QubeOS, Windows or Linux, and requires both a password and fob to log in. See more: [orwl.org](https://orwl.org)
- **Card Skimmer Detector** - Ensure an ATM or card reader does not have an integrated skimming device. See more at [Lab401](https://lab401.com/products/hunter-cat-card-skimmer-detector)
- **Voice Changer** - Useful to disguise voice, while chatting online. See more: [UK](https://amzn.to/3bXqpsn) | [US](https://amzn.to/2PqUEyz)
- **Ultra-Sonic Microphone Jammer** - Blocks phones, dictaphones, voice assistants and other recording devices. Uses built-in transducers to generate ultrasonic signals that can not be heard by humans, but cause indistinct noise, on redording devices, making it impossible to distinguish any details of the conversations. See more [UK](https://amzn.to/2Hnk63s) | [US](https://amzn.to/2v2fwVG)
- **Reflective Glasses** - Blocks faces from most CCTV and camera footage, and stops facial recognition from being able to map your face. See more: [Reflectacles](https://www.reflectacles.com)
- **Bug Detector** - Able to detect radio waves, magnetic fields, in order to find hidden wired or wireless recording or camera equipment and transmitting devices, Note: has limited accuracy. See more: [UK](https://amzn.to/2V8z8C1) | [US](https://amzn.to/2V9AnkI)
- **Active RFID Jamming** - Armour Card is a slim credit-card shaped device, which when in contact with any readers creates an electronic force field, strong enough to "jam" and readings from being taken by emmiting arbitrary data. Aimed at protecting cred cards, identity documents, key cards and cell phones. [US](https://amzn.to/38bJxB9) | [ArmourCard Website](https://armourcard.com)
- **Anti-Facial Recognition Clothing** - Carefully printed patterns that confuse common facial recognition algorithms. See more: [Amazon UK](https://amzn.to/32dnYgO) | [Redbubble](https://www.redbubble.com/people/naamiko/works/24714049-anti-surveillance-clothing?p=mens-graphic-t-shirt) | [Monoza](https://www.monoza.mobi/hyperface-anti-surveillance-shirt/?sku=1045-19321-423696-174028)
- **Tor Travel-Router** - Plug-and-play travel router, providing WiFi with VPN or Tor for more private internet access, also has Wi-Fi uplink and range extender with a clear user interface. See more: [Anonabox.com](https://www.anonabox.com) | [Amazon](https://amzn.to/2HHV0fG)
- **GPS Jammer** - In the DIY list, there was a link to how to build a GPS spoof device using an SDR. But you can also buy a GPS jammer, which may be useful if you fear that you are being tracked. They are aimed at preventing UAVs from operating in your area, but can also be used to confuse other tracking devices near by, there's a variety of models with varying power and range availible from $50 - $500. [AliExpress](https://www.aliexpress.com/item/4000214903055.html)
- **Faraday Cases** - A Faraday cage or Faraday shield is an enclosure used to block electromagnetic fields. This can be really useful for electronics, since many devices are constantly transmitting and recieving, which is the worst when you are trying to avoid being tracked. Their have been numerous reportings that governments can apparently track phones, even when they are [powered off](https://slate.com/technology/2013/07/nsa-can-reportedly-track-cellphones-even-when-they-re-turned-off.html), and since smart phones often do not have removable batteries, the only option is often to shield them from any em waves. See [SilentPocket.com](https://silent-pocket.com/collections/all-products) | [Faraday Box](https://amzn.to/3cj9z7r) | [Faraday Phone Pouch](https://amzn.to/38faum5)
Gadgets that help protect and anonamise your internet, detect & prevent intrusions and provide additional network controlls, both at home and while traveling. There are many products like this availible, some of them are over-priced for what they are, others provide some really essential network security features. It is possible to re-create some of these solutions yourself, to save money [above](#diy-security-products).
- **Anonabox** - Plug-and-play Tor router. Wi-Fi uplink and range extender with user interface, also has VPN options and USB ports for local file sharing. [Amazon](https://amzn.to/38bwZIA) | [Anonabox.com](anonabox.com)
- **FingBox** - Network monitoring and security, for what it offers Fing is very affordable, and there is a free [app](https://www.fing.com/products/fing-app) that you can use before purchasing the hardware to get started. [Fing.com](https://www.fing.com/products/fingbox) | [US](https://amzn.to/2wlXfCT) | [UK](https://amzn.to/2I63hKP)
- **BitdefenderBox** - Cybersecurity home firewall hub, for protecting IoT and other devices. Has other features such as parental controlls and is easy to set up. [US](https://amzn.to/2vrurZJ) | [UK](https://amzn.to/34Ul54w)
- **Trend Micro Box** - Protect home networks from external and internal cyber attacks. Detects intrusions, vulnrabbilities, remote access, web threats and provides other security features. [US](https://amzn.to/2wk3Y0s) | [US](https://amzn.to/2uqX4Wv)
- **AlwaysHome Duo** - USB VPN with accelerated virtual networking to your home or office network, crossing geo-blocking and firewall mechanisms. [US](https://amzn.to/2Ts6oSn) | [UK](https://amzn.to/3bi4cF0)
- **Firewalla Red** - An intrusion detection and intrusion prevention system, with a web and mobile interface. Also has Ad-block, VPN, internet controll features and insights. [US](https://amzn.to/388BlAw) | [Firewalla.com](https://firewalla.com)
- **LibertyShield** - Pre-configured, plug-and-play multi-country VPN router, note that after 1 year there is a monthly subscription. [US](https://amzn.to/2T89vzU) | [UK](https://amzn.to/2twJlwM)
- **Gigabit Travel AC VPN Router** - A fully-featured dual-band travel router with VPN capabilities. [US](https://amzn.to/32HD1zU) | [UK](https://amzn.to/2SkUxFg)
- **InvizBox** - Tor router, that provides speed, privacy and security for all devices connected to it. [Invizbox.com](https://www.invizbox.com) | [Amazon](https://amzn.to/2w4v7V3)
- **[Pi-Hole](https://pi-hole.net)** - Network-level advertisement and Internet tracker blocking application which acts as a DNS sinkhole. Pi-Hole can significantly speed up your internet, remove ads and block malware. It comes with a nice web interface and a mobile app with monitoring features, it's open source, easy to install and very widley used
- **[IPFire](https://www.ipfire.org)** - A hardened, versatile, state-of-the-art open source firewall based on Linux. Its ease of use, high performance and extensibility make it usable for everyone
- **[PiVPN](https://pivpn.io)** - A simple way to set up a home VPN on a any Debian server. Supports OpenVPN and WireGuard with elliptic curve encryption keys up to 512 bit. Supports multiple DNS providers and custom DNS provividers- works nicley along-side PiHole
- **[E2guardian](http://e2guardian.org)** - Powerful open source web content filter
- **[SquidGuard](http://www.squidguard.org)** - A URL redirector software, which can be used for content control of websites users can access. It is written as a plug-in for Squid and uses blacklists to define sites for which access is redirected
- **[PF Sense](https://www.pfsense.org)** - Widley used, open source firewall/router
- **[Zeek](https://www.zeek.org)** - Detect if you have a malware-infected computer on your network, and powerful network analysis framework and monitor
[See more](https://geekflare.com/best-open-source-firewall) open source firewall apps
For most projects, a Raspberry Pi 3 or 4 is more than enough. You could also build your own hardware, see [this guide](https://www.instructables.com/id/Build-your-own-gateway-firewall) on constructing a gateware firewall yourself.
Hardware-based encryption uses a device’s on-board security to perform encryption and decryption. It is self-contained and does not require the help of any additional software. Therefore, it is essentially free from the possibility of contamination, malicious code infection, or vulnerability, and able to be used on any platform.
If the device itself becomes compromised, your data will remain safe. Really useful backing up, transporting and sharing personal data safely. For maximum security, you can combine hardware encryption with software encryption.
Reliable options include:
- AES Hardware encrypted USB 3.0 external hard drive enclosure for HDD or SSD: [US]() | [UK](https://amzn.to/2GM3GkB)
- Integral 256-bit AES USB 3.0 (Software required), 16GB, 32GB, 64GB. [US]() | [UK](https://amzn.to/37vpyNb)
- iStorage 256-bit AES USB 3.0 Pro (Hardware Encrypted), with keypad, 8GB, 16GB, 32GB, 64GB. [US](https://amzn.to/2T9wTgo) | [UK](https://amzn.to/2O1OPXu)
*Alternatively, a cheaper option would be a software-encrypted USB. [VeraCrypt](https://www.veracrypt.fr/en/Home.html) is cross-platform open source encryption application. It's surprisingly simple (see [this how-to guide](https://www.howtogeek.com/108501/the-how-to-geek-guide-to-getting-started-with-truecrypt)), and very secure. Combine this with an ordinary USB drive, this [high-speed (300mb/s) 256GB flash drive](https://amzn.to/2RykcLD) is a great option*
*For encryption your boot drive, you can use [BitLocker](https://docs.microsoft.com/en-us/windows/security/information-protection/bitlocker/bitlocker-overview) (Windows), [FileVault](https://support.apple.com/en-us/HT204837) (OSX), or any of these [options](https://www.tecmint.com/file-and-disk-encryption-tools-for-linux) for Linux.*
Small, low-cost but essential devise. It attaches inbetween your USB cable and the charging socket, and will physically block data transfer and syncing while charging. Totally mitigates the risk of being hacked via a USB exploit, and stops anything being uploaded to your device.
- PortaPow 3rd Gen, USB A, 2-Pack. [Red](https://amzn.to/39aStqE) | [White](https://amzn.to/2TqXl4i) | [Black](https://amzn.to/38imYd2)
- PortaPow Dual USB Power Monitor with Data Blocker, usful for monitoring power consumption and managing which devices are allowed data connections. [US](https://amzn.to/2I7HT7J) | [UK](https://amzn.to/3chnWcJ)
- Privise USB A Data Blocker. [US](https://amzn.to/3cig0rr) | [UK](https://amzn.to/2VAbX3K)
- Data-only Micro-USB cable. Be sure that it is actually data-only, you can count the pins at each end. Again PortaPow make a legitimate safe-charge cable [US](https://amzn.to/2Tq09ys) | [UK](https://amzn.to/38chHDF)
Word of Warning: Sometimes the cable itself can be dangerous. See [O.M.G Cable](https://shop.hak5.org/products/o-mg-cable), it looks like a totally authentic phone cable, but is actually able to deploy advanced exploits often without you being able to identify. It is always best label your cables, to ensure you are using your own, safe wire.
Using a physical 2-factor authentication key can greatly improve the security of your online accounts. See [twofactorauth.org](https://twofactorauth.org) for a list of websites that provide 2FA.
- Yubico USB A + NFC Key, classic key with solid reputation. [UK](https://amzn.to/38ddnUG) | [US]() | [Yubico](https://www.yubico.com/store)
- YubiKey 5 Mobile and Nano Keys. [USB A Nano](https://amzn.to/2wkCmbe) | [USB C](https://amzn.to/2VGkClz) | [USB C Nano](https://amzn.to/39b2zYA)
- Solo Key is an open source U2F and FIDO2 key, USB A + NFC. [US](https://amzn.to/39cJR2P) | [UK](https://amzn.to/3ajnBo0) | [SoloKeys.com](https://solokeys.com)
- OnlyKey is a pin-protected hardware password manager with FIDO2/ U2F. It allows a user to log in without a password or typing out a 2FA code. [OnlyKey.com](onlykey.io/alicia) | [US](https://amzn.to/38blkd3) | [UK](https://amzn.to/3clwTli)
The Verge has a good [article](https://www.theverge.com/2019/2/22/18235173/the-best-hardware-security-keys-yubico-titan-key-u2f) comparing hardware keys.
If you are interested in reserarching how to build your own key, see [U2f-Zero](https://github.com/conorpp/u2f-zero) by Conor Patrick, lets you turn a Pi Zero into a second-factor auth method. Note: project no longer activley maintained, see [NitroKey](https://github.com/nitrokey) instead
The most secure medium to store your currency is cold (offline) wallets, since they cannot be hacked. Of course it is vital that you keep your private keys somewhere that they cannot be stolen, and cannot be lost or destroyed. Electronic devices can make it easy to securely store and spend crypto currency. Choose a wallet that is open source, and with a good reputation. Ensure you backup your seed, and keep it somewhere safe.
- Trezor is fully open source and implements a firmware-based security on top of known hardware. [Trezor.com](https://trezor.io)
- Ledger takes a more black box approach, but their devices are very well tested and secure. They are also easy to use and durable, with good support for a range of crypto. [Ledger.com](https://shop.ledger.com/pages/hardware-wallets-comparison)
- Indestructible Steel Wallet, for private key. [US](https://amzn.to/2Px0EFV) | [UK](https://amzn.to/2VLeVmr)
Always ensure the packaging has not been tampered with, buy direct from the manufacturer when possible.
