What standards apply?
  
EMV standards for EMV '96 version 3.1.1 and EMV 2000 version 4.0 may be found at www.emvco.com

Specific Europay, Master Card and Visa standards may be found at their respective websites www.mastercardeurope.com, www.mastercard.com and www.visa.com. The Visa PIN web site has some specific PIN pad certification information at www.visa.com/pin

UK specific standards are recommended by APACS, see www.apacs.org.uk