Millions of online shoppers could face chaos after a security shake-up that may bar customers without mobile phones.

Critics say banks have not done enough to prepare shoppers for the major changes, which are due to take place within weeks.

The new system, aimed at preventing fraud, requires customers to use an access code - typically sent to a mobile - before making purchases online.

They must enter this number at the check-out to confirm payment.

But Money Mail has discovered a string of issues that could leave shoppers locked out.

• Thousands of Santander customers without mobiles cannot complete purchases.
• The checks could also exclude those who do not get a mobile signal at home.
• Up to a third of purchases could fail.
• Some banks have still not yet warned their customers about the changes.
• Major banks are refusing to let customers 'whitelist' favourite retailers, which means they will always have to input the code.

Almost one in five payments to retailers are online, but under new European legislation, shoppers must soon verify internet purchases with a special code. If you have any concerns concerning where and the best ways to make use of best cvv sites 2020 reddit, you could contact us at our web-page.  

This could be sent to your mobile phone or email address, generated on a card reader or via a banking app, or as an automated message to a landline.

The idea is to make it harder for fraudsters to go on a spree with credit or debit cards. 

Many of us are already used to being sent passcodes by our bank when making an online payment as a way of proving we really are the person carrying out the transaction.