Does Knock share any information about me?
No. We hate that stuff too.
Is Knock broadcasting my password everywhere?
No. That would be, well, quite insecure.
Knock does broadcast a Bluetooth Low Energy signal, but the signal contains absolutely no personally identifiable information. Before transmitting your password, Knock makes sure it is talking to your Mac. Most importantly, your password is never stored or transmitted in unencrypted form. It is encrypted using industry-standard 1024-bit RSA encryption.
Why does Knock use location services?
Knock uses 'Significant Location Monitoring', which is a very low-power, low-precision way to watch for big changes in your iPhone's location. Knock does not collect, save, upload or in any way track or share this location information. We use location monitoring to make sure that Knock for iPhone is always on and ready. Knock will still work if you deny location monitoring, but you will need to manually launch the Knock application after you restart your iOS device or if your iPhone closes Knock for any reason. For more information about Significant Location Monitoring, see this guide from Apple.