I. Payment Configuration in Magento backend
Go to Backend > POS > Settings > Payments on POS
To get the Secret Key, please get it from your Stripe account https://dashboard.stripe.com/login
II. Terminal configuration in POS
Register new Terminal
Connect to a registered Terminal
Disconnect to the current Terminal before connecting to the new one.
III. Stripe Terminal payment option when checkout
Send the payment request to Terminal then wait for the response.
Record the payment info in the order detail
The card number will be displayed like ************1234
Note: To checkout orders with the Stripe terminal successfully, the business location on your Stripe account that generates the Secret Key for your site needs to be the same as the locale of your Magento site and the country that is set up on the terminal.