When choosing a card machine for your business, there are several important features to consider. First, compatibility with various payment methods is essential. Including chip and PIN, contactless payments, and mobile wallet options such as Apple Pay and Google Pay. Security features are important to protecting customer data. You should look for machines that are PCI-DSS compliant and offer encryption. Depending on where you will be using the machine, consider connectivity options like WiFi, Bluetooth or 4G.