Adds some signal jamming and blocking gadgets

6_Privacy_and-Security_Gadgets.md

@@ -63,17 +63,18 @@ Don't want to spend money? Most of the products above, plus some that wearn't in
 See Also [DIY Networking Hardware](#diy-networking-hardware)
 
 - **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.
-- **Hardware Wallet** - Using the Trezor Shield or [Trezor Core](https://github.com/trezor/trezor-firmware) and a Raspberry Pi, you can create your own hardware wallet for safley storing your crypto currency private keys offline. See [this guide](https://github.com/Multibit-Legacy/multibit-hardware/wiki/Trezor-on-Raspberry-Pi-from-scratch) for building. If you enjoyed that, you can also run your own BitCoin and  Lightning Node [Raspiblitz](https://github.com/rootzoll/raspiblitz)
+- **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
 - **AI Assistant Mod** - [Project Alias](https://github.com/bjoernkarmann/project_alias) runs on a Pi, and gives you more control and increased privacy for both Google Home and Alexa, through intercepting voice commands, emitting noise interference + lots more. If your interested in voice assistants, then also check out [Mycroft](https://mycroft.ai)- an open source, Pi-based alternative to Google Home/ Alexa
+- **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)
+- **Credential Recall Card** - A password card is a unique grid of random letters and digits, that lets you generate, store and recall unique and strong passwords for your accounts. Generate your own unique password card, and read more via: [PasswordCard.org](https://www.passwordcard.org/en)
+- **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)
+- **Hardware Wallet** - Using the Trezor Shield or [Trezor Core](https://github.com/trezor/trezor-firmware) and a Raspberry Pi, you can create your own hardware wallet for safley storing your crypto currency private keys offline. See [this guide](https://github.com/Multibit-Legacy/multibit-hardware/wiki/Trezor-on-Raspberry-Pi-from-scratch) for building. If you enjoyed that, you can also run your own BitCoin and  Lightning Node [Raspiblitz](https://github.com/rootzoll/raspiblitz)
+- **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)
 - **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.
 - **No-Mic Laptop** - You can go one step further than using a mic-blcoker, and physically remove the microphone from your laptop. (And then use a removable external mic when needed). See how, for [Apple MacBook and iPhone](https://www.wired.com/story/remove-the-mic-from-your-phone/) | [Video Guide](https://www.youtube.com/watch?v=Eo-IwQMeVLc). If that seems to extreme, there are [other options](https://security.stackexchange.com/a/130402)
 
@@ -91,23 +92,27 @@ If you are confident with electronics, then you could also make:
 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)
-- **Librem Key** - A USB security token to make encryption, key management, and tamper detection convenient and secure. [Purism](https://puri.sm/products/librem-key/)
-- **True Random Number Generator** - FST-01SZ is a tiny stand alone USB 32-bit computer based on a free hardware design. (NeuG is an implementation of a TRNG for GD32F103 MCU). See More: [Free Software Foundation: Shop](https://shop.fsf.org/storage-devices/neug-usb-true-random-number-generator)
-- **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)
+- **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)
+- **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)
 - **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)
+- **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)
+- **Audio Jammer/ White Noise Generator** - protects your private room conversations by generating a un-filterable masking sound which desensitizes any near-by microphones. Sounds like random static to your ears but it is a variable oscillating frequency that masks your in person conversations. via [SpyGadgets.com](https://www.spygadgets.com/rechargeable-audio-jammer-white-noise-generator-aj-40/)
+- **LibremKey: USB Token** - A USB security token to make encryption, key management, and tamper detection convenient and secure. [Purism](https://puri.sm/products/librem-key/)
+- **Secalot: All-in-one Security Key** - An open source, small USB, that functions as a hardware Hardware cryptocurrency wallet, OpenPGP smart card, U2F authenticator, and one-time password generator. via [Secalot](https://www.secalot.com/)
+- **Slim Hardware OTP Generator** - A reprogrammable TOTP hardware token authenticator. Unlike USB security keys, this does not need to be connected, and instead is used like a mobile OTP generator, where you enter the 6-digit code. Useful as a backup, in case your phone is not accessible. Via [Protectimus](https://www.protectimus.com/protectimus-slim-mini/)
+- **p@ss™ Bracelet** - Fun password generator wristband, allowing you to generate hard to guess, unique passwords for each of your online accounts, and not have to remember them. [Tindie](https://www.tindie.com/products/russtopia/psstm-bracelet/)
+- **Credential Recall Cards** - An easy method for generating and recalling secure passwords. You could [make your own](https://www.passwordcard.org/en), or buy one such as the C@RD™ Mark II, available via: [Tindie](https://www.tindie.com/products/russtopia/crdtm-mark-ii-credential-ccess-recall-device/)
+- **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)
+- **Deauth Detector** - Most WiFi-based attacks involve sending deauth packets at some point, a deauth-detector will notify you whenever these packets are detected. This particular model uses SpaceHuhns code, running on an ESP8266. via: [Tindie](https://www.tindie.com/products/lspoplove/dstike-deauth-detector-pre-flashed-with-detector/) | [Amazon](https://www.amazon.com/MakerFocus-ESP8266-Detector-Pre-flashed-Deauther/dp/B07WKDPBRY)
 - **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)
 - **Advanced Multi-Frequency RF Detector** - Get instantly notified whenever a threat enters your environment. Detects the following frequencies: CDMA (824–849MHz), GSM(880-920MHz), GS-DCS(1710–1790MHz), WCDMA, 3G, GSM-PCS, DECT(1920–2480MHz), Bluetooth, WiFi(2400–2480MHz), Wi-Max(3000–7000MHz). via [spygadgets.com](https://www.spygadgets.com/1207i-multi-frequency-rf-bug-detector-cdma-gsm-bluetooth-wimax/)
 - **Laser Surveillance Defeater** - Sophisticated spies could potentially use a laser microphone, which bounces an invisible infrared laser off of a window and back to a light sensor. By measuring any interference in that reflected light, the laser microphone can detect vibrations in the window pane and reconstruct sound on the other side of the glass. A laser surveillance defeater creates small in-audible vibrations, which can stop all vibration-based evesdropping. [shomer-tec](https://www.shomer-tec.com/laser-surveillance-defeater.html) | [Amazon](https://www.amazon.com/Surveillance-Defeater-Countermeasure-Protection-Device/dp/B00383Z5L0)
-- **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)
+- **Voice Changer** - Useful to disguise voice, while chatting online. See more: [UK](https://amzn.to/3bXqpsn) | [US](https://amzn.to/2PqUEyz)
 - **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)
+- **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)
 - **Hardware Password Manager** - MooltiPass is an offline, hardware encrypted USB password manager, with desktop and mobile browser integrations. You can export your KeePass database onto it, for secure authentication on the road, and the hardware is open source. See More: [TheMooltiPass.com](https://www.themooltipass.com) | [Hackaday](https://hackaday.com/tag/mooltipass/)
-- **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)
-- **Audio Jammer/ White Noise Generator** - protects your private room conversations by generating a un-filterable masking sound which desensitizes any near-by microphones. Sounds like random static to your ears but it is a variable oscillating frequency that masks your in person conversations. via [SpyGadgets.com](https://www.spygadgets.com/rechargeable-audio-jammer-white-noise-generator-aj-40/)
-- **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)
-- **p@ss™ Bracelet** - Fun password generator wristband, allowing you to generate hard to guess, unique passwords for each of your online accounts, and not have to remember them. [Tindie](https://www.tindie.com/products/russtopia/psstm-bracelet/)
+- **QUANTUM** - Multifunctional crypto device, is an open source secure, reliable and simple cross-platform cryptocurrency wallet and password manager. See more: [crypto-arts.com](https://security-arts.com/) | [Tindie](https://www.tindie.com/products/security-arts/quantum-multifunctional-crypto-device/)
+- **Faraday Cases** - A Faraday cage or Faraday shield is an enclosure used to block electromagnetic fields. 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)
 - **DNA Invisble** - An open source recipe that erases and deletes 99.5% of DNA left behind, and obfuscates the remaining 0.5%. You leave your DNA behind all the time, once analysed this is able to say a lot about your genetic makeup, and who you are. Learn more about this threat in [this video](https://youtu.be/MoX_BDWZUG0), See [DNA Invisible](http://biogenfutur.es)
 - **Forensic bridge kit** - Allows for write blocking to prevent unauthorized writing to a device, and for crating images with out modifying data. See more: [Amazon](https://www.amazon.com/dp/B00Q76XG5W)
 - **Firewalla** - Tiny open source smart firewall. Has many useful features: VPN Server, Ad-blocker, powerful monitoring, security analysis and family controls. [Firewalla.com](https://firewalla.com) | [Tindie](https://www.tindie.com/products/firewallallc/firewalla-smart-internet-security-for-your-home/)
@@ -116,10 +121,10 @@ We can go even further, these products are far from essential and are maybe a li
 - **Shredder** - It is important to safely dispose of any documents that contain personal information. This is a very affordable shredder - it cuts pieces into security level P-4 sizes (5/32" by 15/32"). It also shreds credit cards into the same size. [Amazon](https://www.amazon.com/AmazonBasics-6-Sheet-High-Security-Micro-Cut-Shredder/dp/B00Q3KFX8U)
 - **Device Timer** - This non-smart device can be used to turn various devices (such as lights or radio) on or off at certain times. It's useful to deter people when you are away. [Amazon](https://www.amazon.com/Century-Digital-Programmable-Packaging-Security/dp/B00MVF16JG)
 - **SurfEasy Key** - A portable web browser you can carry in your pocket for private and secure browsing on the go. Provides encrypted storage and anonymous browsing features. Again, you can make your own version with an encrypted USB, and a portable executable. [fightforthefuture.org](https://shop.fightforthefuture.org/products/surfeasy-key)
-- **QUANTUM** - Multifunctional crypto device, is an open source secure, reliable and simple cross-platform cryptocurrency wallet and password manager. See more: [crypto-arts.com](https://security-arts.com/) | [Tindie](https://www.tindie.com/products/security-arts/quantum-multifunctional-crypto-device/)
 - **Private Texting LoRa Transceivers** | A pack of 2 private texting unit, which are small companion radios for a smartphone, allowing you to communicate independently from celluar networks, great for privacy, security and when you have no service. [Tindie](https://www.tindie.com/products/DLSpectrum/two-private-texting-lora-transceivers/) 
 - **TrueRNG** - Generates a stream of True Random Numbers for use in Simulations, Security, and Gaming. [Tindie](https://www.tindie.com/products/ubldit/truerng-v3/)
 - **Wire Tap Detector** - Easily check both single and multi-line phone systems for series and parallel taps. Via [BrickHouseSecurity](https://www.brickhousesecurity.com/counter-surveillance/wiretap/)
+- **True Random Number Generator** - FST-01SZ is a tiny stand alone USB 32-bit computer based on a free hardware design. (NeuG is an implementation of a TRNG for GD32F103 MCU). See More: [Free Software Foundation: Shop](https://shop.fsf.org/storage-devices/neug-usb-true-random-number-generator)
 
 
 ## Network Security
@@ -212,19 +217,18 @@ Word of Warning: Sometimes the cable itself can be dangerous. See [O.M.G Cable](
 
 ## FIDO U2F Keys
 
-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.
+Physical 2-factor authentication keys are a secure and convinient method of authentication. See [twofactorauth.org](https://twofactorauth.org) for a list of websites that provide 2FA.
+- **[Solo Key](https://solokeys.com)** - An open source U2F and FIDO2 key, with NFC. via [SoloKeys.com](https://solokeys.com)
+- **[LibremKey](https://puri.sm/products/librem-key/)** - A USB security token to make encryption, key management, and tamper detection convenient and secure. via [Puri.sm](https://puri.sm/products/librem-key/)
+- **[OnlyKey](onlykey.io/alicia)** - A pin-protected open source hardware password manager with FIDO2/ U2F. It's very affordable, considering the broad feature set, but initial setup is a little complex. Via [OnlyKey.com](onlykey.io/alicia)
+- **[NitroKey](https://www.nitrokey.com/)** - An open source secure USB, providing authentication (OTP, U2F and static passwords), email encryption (GnuPG, OpenGPG, S/MIME etc), file encryption (with VeraCrypt, GnuPG and more), key and certificate management and SSH keys for server administration. via [NitroKey.com](https://www.nitrokey.com/)
+- **[Secalot](https://www.secalot.com/)** - A small open source USB, that functions as a hardware Hardware crypto wallet, OpenPGP smart card, U2F authenticator, and one-time password generator. via [Secalot.com](https://www.secalot.com/)
+- **[Protectimus](https://www.protectimus.com/protectimus-slim-mini/)** - A credit-card sized, slim TOTP hardware token. Allows you to generate 6-digit OTP codes, without the need for a mobile device. Useful as a backup, in case your phone is not accessible. Via [Protectimus.com](https://www.protectimus.com/protectimus-slim-mini/)
+- **[Yubikey](https://www.yubico.com/products/)** - Extremely popular, easy-to-use and reliable authentication keys, availible in a variety of form factors- from Micro keys, USB-C, Slim USB-A, and dual lightning + USB. Note, that neither the hardware, nor software is open source. Via [yubico.com](https://www.yubico.com/products/)
+- **[Thetis](https://thetis.io)** - Extremely durable, mobile-friendly USB-A FIDO U2F Key. via [Thetis.io](https://thetis.io)
+- **[U2F Zero](https://u2fzero.com/)** - Simple, open source U2F token, with write-only keys, tamper-resistance and hardware true random number generator to ensure high entropy.
 
-- **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)
-- **Thetis** - Durable. mobile-friendly USB-A FIDO U2F Key. [US](https://amzn.to/39f6Dqu) | [UK](https://amzn.to/3cm9xvK) | [Thetis.io](https://thetis.io)
-- **Solo Key** - 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** - 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)
-- **Librem Key** - Makes encryption, key management, and tamper detection convenient and secure. Includes an integrated password manager, random number generator, tamper-resistant smart card plus more. [Puri.sm](https://puri.sm/products/librem-key)
-
-
-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
+You can also 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. Or check out [NitroKey](https://github.com/nitrokey), for a guide on building U2F with an ESP-8266, see [this Hackaday article](https://hackaday.com/2018/01/04/two-factor-authentication-with-the-esp8266/)