Opel ASTRA 2014 Owner's Manual page 324

322 Customer information
Radio Frequency
Identification (RFID)
RFID technology is used in some
vehicles for functions such as tyre
pressure monitoring and ignition
system security. It is also used in
connection with conveniences such
as radio remote controls for door
locking/unlocking and starting, and in-
vehicle transmitters for garage door
openers. RFID technology in Opel
vehicles does not use or record
personal information or link with any
other Opel system containing
personal information.