Airtag?
dereitz opened this issue · comments
Would you happen to know if a similar trick could be used to detect the presence of an Airtag? I only have one.
Thanks in advance!
Airtag detection might be possible, based on the reverse-engineering here:
| Byte # | Value | Description |
|---|---|---|
| 0 | 0x1E | Advertising data length: 31 (the maximum allowed) |
| 1 | 0xFF | Advertising data type: Manufacturer Specific Data |
| 2-3 | 0x004C | Apple’s company identifier |
| 4 | 0x12 | Apple payload type to indicate a FindMy network broadcast |
| 5 | 0x19 | Apple payload length (31 - 6 = 25 = 0x19) |
| 6 | 0x10 | Status byte |
| 7-29 | Varies | EC P-224 public key used by FindMy network. Changes daily |
| 30 | 0-3 | Upper 2 bits of first byte of ECC public key |
| 31 | Varies | Crypto counter value? Changes every 15 minutes to a random value |
my dog wants this :)
my dog wants this :)
exact same reason I wanted this! :)
I think if you only have 1 Airtag, (or at least don't want to differentiate between tags if you have multiple) then this could be possible. The problem is I don't have an Airtag so can't test.
If anyone has Airtags and can help me test, and is familiar with blescan on Linux/Raspberry Pi we can see if this is viable.
It's a bit janky, but have you considered having 2 tags on your dogs collar?
- Airtag, for when the dog is wandering around the neighbourhood (or beyond.)
- Generic BLE tag (eg TrackR Pixel) where you can detect the rssi/presence using ESP32 + ESPHome devices around the house, for when your dog is on your property.
hi, is there something new?
Maybe I can help .. but I need your help. Maybe Teamview?
Have Esp32 mini / Many Airtags.
Thanks