What happens if merchants are not chip enabled by February 2009 and a chip card is presented? Can the mag stripe on that card be used?
Absolutely. Mag stripes will still be a valid form of payment.
Source: MasterCard
Going forward, will there be exceptions that allow cardholders to use signature rather than PIN and how will this work?
The main message is to follow the prompts. If a PIN is required, the terminal will prompt for it. If a signature is required, a signature line will be printed on the receipt.
Source: MasterCard
How will customer training be handled? Who is responsible?
Card issuers will communicate to their cardholders, just as acquirers communicate with their merchants. The
prompts at the device should guide the cardholder and merchant through the transaction.
Source: MasterCard