Wireless directional identification and verification using wearable electronic devices

A wearable electronic device comprising:

• a processor;
• a user input device;
• a first transmitter coupled to the processor and configured to transmit directed electromagnetic radiation;
• a second transmitter coupled to the processor and configured to transmit electromagnetic radiation;
• and
• a receiver;
• wherein the processor is configured to:
• cause an emission of directed electromagnetic radiation from the first transmitter, the directed electromagnetic radiation configured to transmit an identifier associated with a user of the wearable electronic device to be communication to one or more receiving devices disposed within a limited beam width of the directed electromagnetic radiation;
• detect a predefined user input via the user input device;
• and
• responsive to receiving a challenge signal requesting a verification response verifying an authenticity of the identifier, cause a challenge response corresponding to the predefined user input to be transmitted by the second transmitter.