The system had the potential to include real-time risk analysis that could trigger the request of a PIN for a transaction that falls outside of normal parameters.

FORBES: Mobile payment is finally here (maybe)

As for cardholders who are still waiting to be issued with chip and pin they will be able to continue to sign for their purchases in the normal way as retailers will not be liable if the card is used fraudulently.

BBC: NEWS | Business | Stores face card fraud deadline