How do PIN pads connect to the workstation (POS)?

PIN pads typically connect to a workstation (Point of Sale system) using a serial cable due to the reliability and simplicity of this method. Serial connections allow for direct communication between the PIN pad and the POS system, enabling secure data transmission, which is crucial for handling sensitive payment information. The use of a serial cable ensures that the connection is stable and less susceptible to interference compared to wireless methods.

While other connection methods exist, such as USB or LAN cables, serial connections are often favored in many traditional POS setups for their straightforward integration and established standards. This is particularly important in environments where secure payment processing and consistent performance are essential, which are hallmarks of PIN pad transactions in the retail or services sectors.