Greenlines: privacy
Last updated 6 November 2026
Greenlines is a 5250 and 3270 terminal for your phone. It is a small Android app I build on my own
(com.growingpeas.greenline on Google Play). This page says what it keeps, what leaves your
phone, and why it asks for each permission. The controller is Lawrenza SRL, trading as Growing Peas; full
details are on the legal notice.
What leaves your phone
- What you send to your hosts. What you type, passwords included, goes to the host you connect to, and only there. That host is yours or your employer's: I have no access to it and receive none of it. Without TLS on a host, the connection is not encrypted.
- Barcode scans. The scanner runs in Google Play services, under Google's own privacy policy, only when you tap Scan. The app receives the code it reads, not the camera image.
- Purchases. The full version is a one-time purchase handled by Google Play. Google processes the payment under its own privacy policy; I receive no card details.
- What you choose to send. Writing to me from the settings goes through the mail app you pick, only when you tap it. A settings file you export goes where you save it.
There is no account, no sign-in and no advertising, and the app contains no analytics or crash reporting of mine. Google's libraries for purchases and scanning may send Google their own technical data.
What stays on your phone
- Your hosts, macros and settings. Macros are plain text: never put a password in one.
- A password, only if you choose to save it for a host: encrypted under a key your fingerprint or screen lock releases at each use, and never put in a settings file.
- Whether you unlocked the full app.
The app opts out of Android's app backup, so none of this is copied to your Google account.
Permissions
- Internet and network state: to reach your hosts, and for Google Play.
- Fingerprint or screen lock: to open a saved password.
- Notifications and foreground service: to keep a session connected in the background, with a notification that ends it.
The app itself never asks for your camera, your microphone, your location, your contacts or your files.
Deleting your data
Everything is on your phone, so you delete it there: Settings, Apps, Greenlines, Storage, Clear storage, or by uninstalling. I hold no copy to delete. Data on your hosts belongs to whoever runs them.