Intercepting Ears

Your eardrums are partially perforated with psychic crystals that resonate at the frequencies commonly used by telepathy. Whenever a creature within 30 feet of you sends or receives a telepathic message using limited telepathy or telepathic message, you can overhear the message with a successful DC 25 Perception check (this requires no action). For mk 2 intercepting ears the Perception check DC is 20.

Intercepting Ears, Mk 1

Source Starfinder Armory

Item Level 3; Price 1,225; System Ears

Intercepting Ears, Mk 2

Source Starfinder Armory

Item Level 9; Price 13,600; System Ears