what do the microchips on visa cards do 
the microchips embedded on the front of visa cards and other brands of cards carry encrypted information about the cardholder and their account they are designed to be more secure than the magnetic stripes on the cards backs which carry much the same information most cards today have both chips and stripes because some merchants have not yet switched over to sales terminals compatible with chip technology the bottom linevisa is a major payment card processing network and cards bearing its logo are widely accepted worldwide whatever type of card a consumer might be looking for a visa affiliated issuer probably offers it 