I imagine there are some Frankensteinian ways to create the necessary current to activate the RF sensor, but… well, Frankenstein
http://www.theregister.co.uk/2014/09/23/iphone_6_still_vulne... - glue fingerprint replica sufficient
http://www.iphonehacks.com/2016/02/iphone-touch-id-hacked-wi... - PlayDoh, dental paste
http://www.theregister.co.uk/2014/09/23/iphone_6_still_vulne... - glue fingerprint replica sufficient
http://www.iphonehacks.com/2016/02/iphone-touch-id-hacked-wi... - PlayDoh, dental paste