The reason why the POS machine cannot swipe the card is:
1, this machine is sealed or untied 2, this machine has not been opened and the merchant background is not related to the solution: please contact the receipt bank or installation personnel to help solve and submit information. POS (pointofsale) is a multi-functional terminal, it is installed in the credit card merchants and acceptance outlets and computer network, you can achieve electronic funds automatic transfer, it has the support of consumption, pre-authorization, balance inquiry and transfer functions, the use of safe, fast and reliable.