Use offline maps app, like OsmAnd (#76)

README.md

@@ -286,6 +286,7 @@ More of us are concerned about how [governments use collect and use our smart ph
 **Be Careful of Phone Charging Threats** | Optional | [Juice Jacking](https://www.fcc.gov/juice-jacking-dangers-public-usb-charging-stations) is when hackers use public charging stations to install malware on your smartphone or tablet through a compromised USB port. You can mitigate this, either by using a power bank or AC wall charger, or by using a simple data blocker device (See [USB Condom](https://shop.syncstop.com/products/usb-condom?variant=35430087052) or [PortaPow Blocker](http://portablepowersupplies.co.uk/))
 **Set up a mobile carrier PIN** | Recommended | [SIM hijacking](https://securelist.com/large-scale-sim-swap-fraud/90353/) is when a hacker is able to get your mobile number transferred to their sim (often through social engineering your mobile carrier). This then allows them to receive 2FA SMS codes (enabling them to access your secure accounts, such as banking), reset passwords, or to pose as you. The easiest way to protect against this is to set up a PIN through your mobile provider, thus disallowing anyone without this PIN to make any changes to your account. This varies between cell providers, so consult your mobile carrier for setup instructions. Using a non-SMS based 2FA method will reduce the damage, [Read more](https://us.norton.com/internetsecurity-mobile-sim-swap-fraud.html) about the sim swap scam.
 **Opt-out of Caller ID Listings** | Optional | When one of your friends or colleagues has your number in their contacts, and also has a caller ID app, then your Name, Phone Number and any other saved contact details will be uploaded. To keep your details private, you can unlist it here:  [TrueCaller](https://www.truecaller.com/unlisting), [CallApp](https://callapp.com/how-to/unlist-phone-number), [SyncMe](https://sync.me/optout), [cia-app](https://cia-app.com/self-service/delist-number), [Hiya](https://hiyahelp.zendesk.com/hc/en-us/requests/new?ticket_form_id=824667). Note that it is possible to opt-out, even before your number has been added, and this will prevent your details being uploaded in the future.
+**Use Offline Maps** | Optional | One of potential for data leaks is your map app which has access to your precise location, e.g. Google Maps which collects plenty of private data. Consider using an offline maps app, such as [OsmAnd](https://osmand.net/) or [Organic Maps](https://organicmaps.app/)
 **Opt-out of personalized ads** | Optional | In order for ads to be personalized, Google collects data about you, you can slightly reduce the amount they collect by opting-out of seeing personalized ads. See [this guide](https://www.androidguys.com/tips-tools/how-to-disable-personalized-ads-on-android/), for Android instructions.
 **Erase after too many login attempts** | Optional | To protect against an attacker brute forcing your pin, if you lose your phone, set your device to erase after too many failed login attempts. See [this iPhone guide](https://www.howtogeek.com/264369/how-to-erase-your-ios-device-after-too-many-failed-passcode-attempts/). You can also do this via Find my Phone, but this increased security comes at a cost of decreased privacy.
 **Monitor Trackers** | Optional | A tracker is a piece of software meant to collect data about you or your usages. [εxodus](https://reports.exodus-privacy.eu.org/en/) is a great service which lets you search for any app, by its name, and see which trackers are embedded in it. They also have [an app](https://play.google.com/store/apps/details?id=org.eu.exodus_privacy.exodusprivacy) which shows trackers and permissions for all your installed apps.