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I guess you're aware of http://termux.com http://termux.com? It's effectively a linux distribution for android (with a large repository of packages), that uses

I guess you're aware of http://termux.com http://termux.com? It's effectively a linux distribution for android (with a large repository of packages), that uses the existing android kernel. So no rooting required, and has the power efficiency of android.

caresource_ta 7y ago
This is very interesting. This might just replace the raspberry pi connected to my VT220, I could even use a Bluetooth serial transceiver and make the whole thing wireless.
mirimir 7y ago
Does it provide tools to lock down GPS and WiFi-based geolocation? And turn off scanning WiFi APs? Just allow manual selection. Also, can you flash firmware? Maybe wipe the GPS firmware? Oh, and can you mess with the baseband? Edit: I asked in the Termux Wiki.
- deleted 7y ago
  [deleted]
- mirimir 7y ago
  I got some helpful answers from Termux GitHub issues: mirimir> I'd like to totally lock down the GPS chip. xeffyr> Not without root and some actions will be device-specific. mirimir> I'd also like to turn off WiFi-based geolocation. xeffyr> Android settings isn't enough ? Or you think the settings are no-op ? In such case delete the Google Play services immediately. mirimir> And totally prevent sharing of location data, anywhere outside the device. xeffyr> Disassemble your device and cut the all antennas and optionally USB port. mirimir> I'd like to turn off scanning of WiFi APs. xeffyr> Again - go to Android settings and turn off. mirimir> And just connect manually to a private AP xeffyr> Impossible if previous 2 points are performed. mirimir> for connectivity via nested VPN chains. xeffyr> You really think that VPN chain is more secure than just 1 VPN ? From encryption side it is but you forgot about side-channel attacks. Time (worldwide) and connection metadata are your enemy here. mirimir> If possible, I'd like to disable or wipe the GPS and baseband firmware. xeffyr> Find the right block device in /dev/block then fill it with zeros. Example: dd if=/dev/zero of=/dev/block/mmcblk0p8. xeffyr> Some devices do not expose the baseband block device or have it in permanent RO mode. xeffyr> GPS can be completely disabled by recompiling kernel without its drivers + modifying init.rc scripts in ramdisk to disable gpsd service. mirimir> And then use an external WiFi router or cellular modem/router. xeffyr> Good luck with modifying Android OS framework. It does not natively support external wifi or cellular modem.
terminaljunkid 7y ago
I literally got into CSE because of termux, at the time I didn't even have a PC..

caresource_ta 7y ago

This is very interesting. This might just replace the raspberry pi connected to my VT220, I could even use a Bluetooth serial transceiver and make the whole thing wireless.

mirimir 7y ago

Does it provide tools to lock down GPS and WiFi-based geolocation? And turn off scanning WiFi APs? Just allow manual selection. Also, can you flash firmware? Maybe wipe the GPS firmware? Oh, and can you mess with the baseband? Edit: I asked in the Termux Wiki.

deleted 7y ago
[deleted]
mirimir 7y ago
I got some helpful answers from Termux GitHub issues: mirimir> I'd like to totally lock down the GPS chip. xeffyr> Not without root and some actions will be device-specific. mirimir> I'd also like to turn off WiFi-based geolocation. xeffyr> Android settings isn't enough ? Or you think the settings are no-op ? In such case delete the Google Play services immediately. mirimir> And totally prevent sharing of location data, anywhere outside the device. xeffyr> Disassemble your device and cut the all antennas and optionally USB port. mirimir> I'd like to turn off scanning of WiFi APs. xeffyr> Again - go to Android settings and turn off. mirimir> And just connect manually to a private AP xeffyr> Impossible if previous 2 points are performed. mirimir> for connectivity via nested VPN chains. xeffyr> You really think that VPN chain is more secure than just 1 VPN ? From encryption side it is but you forgot about side-channel attacks. Time (worldwide) and connection metadata are your enemy here. mirimir> If possible, I'd like to disable or wipe the GPS and baseband firmware. xeffyr> Find the right block device in /dev/block then fill it with zeros. Example: dd if=/dev/zero of=/dev/block/mmcblk0p8. xeffyr> Some devices do not expose the baseband block device or have it in permanent RO mode. xeffyr> GPS can be completely disabled by recompiling kernel without its drivers + modifying init.rc scripts in ramdisk to disable gpsd service. mirimir> And then use an external WiFi router or cellular modem/router. xeffyr> Good luck with modifying Android OS framework. It does not natively support external wifi or cellular modem.

terminaljunkid 7y ago

I literally got into CSE because of termux, at the time I didn't even have a PC..