> The individual messages are encrypted much like messages in iMessage are. After the devices are paired, each device generates a symmetric 256-bit AES key that gets stored in the device’s keychain. This key can encrypt and authenticate the BLE advertisements that communicate the device’s current activity to other iCloud-paired devices using AES256 in GCM mode, with replay protection measures.
Love the concept, but P2 code depends on the country, I think it should not be resilient on geopolitical address.
For example, in France, states have changed recently (change in name and merging).