Online banking

Online banking

Showing results for 
Search instead for 
Did you mean: 

Online Banking

What is a Temporary Security Number and when do I use it?

A Temporary Security Number is a code we use as an additional security measure to confirm your identity if:


  • you're registering for Online Banking for the first time


  • you've forgotten your login details


  • you're using a browser on a computer or mobile device we don't recognise and we don't have your up to date mobile phone number.


We'll send the Temporary Security Number to you by text message, if we have your up to date mobile phone number. If we don't, we'll send it by post and you'll have to wait for it to arrive before you can log in to Online Banking.


When you receive your Temporary Security Number return to the Registration or Login screen. You'll be asked to enter the Temporary Security Number in full to complete registration or reset your login details.


Your Temporary Security Number is valid for 30 days from the date it was requested and can only be used once. If it expires, you'll need to contact us to get a new one.


Hi can you please send me a temporary security code as I cannot log into my loan account,  saying it doesn't recognise device.


Many thanks



@christinesisson If you can message us privately @Tesco-Bank confirming your full name, DOB and postcode, we'll arrange this for you.

Hi can you please send me the temporary log in code as it is saying it does not recognise my device thank you 

@Juliatate, thanks for getting in touch. Please privately message us @Tesco-Bank  with your full name, DOB and postcode, and we'll do this for you.

Iv locked myself out of my account and need a temporary security number please 

I've replied to your private message :)!

Hi, how do I get a temporary security number? My device is not recognised and have forgot my password for my account.



Hi @Bigmoocow72, if you message us directly @Tesco-Bank with your full name, DOB and postcode, we'll get this arranged for you!

How long does it take to receive a temporary security number via text message please? Seem to have locked myself out 😮

Hi @Kimg2468, if we were to send a Temporary Security Number (TSN) by post it would arrive within 3-5 business days to arrive and will be valid for 30 days. If you would like this sent by text please give us a call on 0345 300 3511 (24/7) and my colleagues will be able to arrange this for you. The TSN sent by text will usually arrive within a few minutes if not instantly.