Arduino based module capable of RSSI function

Hi,

Are there any existing RFID modules for arduino capable of generating RSSI values?
We plan on using RSSI values for location using trilateration on a small scale distance.
Thank you for your help.

RFID and RSSI are hardly usable for triangulation.

on a small scale distance.

<1 cm?

RSSI is useless for trilateration.