> it should be absolutely trivial to detect how far away the key is based on the response time
Is that true? Accurate, very low power distance detection has a lot of potential applications (e.g. your phone straying too far away) but BLE (for example) doesn't really work for measuring distance--through signal strength--at all. If it's possible, I'd be very curious how to build such a distance detector.
Is that true? Accurate, very low power distance detection has a lot of potential applications (e.g. your phone straying too far away) but BLE (for example) doesn't really work for measuring distance--through signal strength--at all. If it's possible, I'd be very curious how to build such a distance detector.