Every meditation app on your phone runs roughly the same loop: you press start, a timer counts down, and at the end it records a session. Nothing in that loop checks whether you meditated. You could press start and make a sandwich.
That is not necessarily an oversight. For many people a meditation app is a gentle nudge, and a gentle nudge that accuses you of lying is not gentle anymore. But if the timer cannot tell the difference between sitting and making a sandwich, the streak it shows you is a record of button presses.
Some people want the streak to mean something harder than that.
Verification needs a real signal
Verification means the app has to observe something. The cheapest signal is motion from the phone's accelerometer, but a phone lying on a table is perfectly still whether or not you are on the cushion. A posture signal requires the camera.
That raises the obvious objection immediately: a camera pointed at you while you meditate. The only acceptable implementation is one in which frames never leave the device and are never stored. They can be analysed in memory, converted into temporary pose landmarks, and discarded. Only the measurements needed to run the timer should remain.
Strict does not have to mean hostile
A strict timer should not turn practice into punishment. When posture moves outside the calibrated range, the useful response is to pause verified time, explain what changed, and resume when posture returns. The app acts as a referee rather than a critic.
The distinction matters. A loud failure screen makes a moment of discomfort feel like a verdict. A quiet pause says something simpler: this part does not count yet.
What the stricter record means
The benefit is not a perfect posture score. Bodies move, and meditation is not a contest in rigidity. The benefit is a record with a defined standard: you were present, in frame, and inside the posture range you established at the beginning of the session.
What you get in exchange is a streak that is evidence rather than a claim. The timer can wait when posture breaks, then continue when you return. There is no honour system to fail because the definition of a verified minute is built into the session itself.