A credit card reader is any device that can handle payments through a phone or tablet, along with POS software.
Thanks to their incredibly low prices, most small businesses can afford to avoid conventional cash and checks methods and take card payments with the help of smartphones/tablets.
Usually, card readers for chip and contactless payments function wirelessly, connecting with the device at your choice via Bluetooth.
When the app is connected with the reader itself, you can accept card payments. Just make sure you choose a user-friendly credit card reader that easily manages chip and tap payments.