Maybe encryption it’s too much or too hard.
But some checksum with key will be good
Checksum(payload+key)
Or base64+checksum
Syncword it’s not enough, anyone can fake data
Maybe encryption it’s too much or too hard.
But some checksum with key will be good
Checksum(payload+key)
Or base64+checksum
Syncword it’s not enough, anyone can fake data