Privacy
Short version: your camera video never leaves your computer, and usage stats are optional, anonymous, and off unless you say yes.
Your camera
Hand tracking runs entirely on your computer. Video frames are processed locally and are never uploaded, saved, or sent anywhere.
Anonymous usage stats (optional)
The first time you open the Camera Monitor, HandGestures asks whether to share anonymous usage stats. Nothing is sent unless you choose yes. You can change your mind anytime with Share anonymous stats in the Camera Monitor.
| Sent (only if you opt in) | Never sent |
|---|---|
|
A random install ID (not derived from your computer or you) Add-on version and Anki version Operating system type (Windows / Mac / Linux) Your gesture set, which hand is tracked, and whether the detection zone is on Per-day counts: camera starts, cards answered by gesture, which gestures were used |
Camera images or video Your name, email, username, or computer name Your decks, cards, notes, or review history Files or folder paths Your IP address is not stored |
When and where it's sent
Each time HandGestures starts, it sends any counts saved since the last check-in to api.handgestures.app over HTTPS (with a backup address if that one can't be reached). If you're offline, counts are kept on your computer and sent later, up to 60 days.
Turning it off deletes your data
Unticking Share anonymous stats stops all sending, clears the counts saved on your computer, and asks the server to delete everything stored for your install ID.
What the stats are for
Knowing how many people use HandGestures, which gestures work, and which platforms to support. They're never sold or shared, and there are no ads or trackers on this site.
Updates
HandGestures updates through AnkiWeb (Tools → Add-ons → Check for Updates). The stats reply may tell the add-on that a newer version exists, so it can show a notice — the add-on never downloads or runs code from this server.
Contact
Questions or deletion requests: message me through Ko-fi or the AnkiWeb add-on page.