One-button locking of credit card is a security function launched by China Merchants Bank. When the user turns on the one-button card locking function, the payment of each channel of the card will be restricted, mainly in terms of the amount. Payment channels include but are not limited to WeChat payment, Alipay payment, ATM transaction and POS transaction.

If necessary, the cardholder can lock or unlock the credit card with one click through the Pocket Life application.

The specific steps are as follows: Open the Pocket Life App, enter the "Card Payment"-"Card Manager" page, then click the "One-key Card Lock" setting below the card, find the "One-key Card Lock" option, and turn on the switch.

On the "one-key locking" page, you can set some functions that need to be locked separately. You can set the options of domestic consumption and foreign consumption without card transaction, credit card transaction, etc., just according to your personal preferences. Generally speaking, this function is very convenient, and it also ensures the security of the cardholder's account to a certain extent.