Tokens are popular in the corporate world
Online finance service PayPal, which is used by many people on eBay to pay for items, is introducing a security token to tackle fraud.
The $5 (£2.57) token generates a random, six-digit code every 30 seconds which is then used as part of the login process for the website.

Customers will also need to enter their user name and password.

PayPal hopes the token will defeat phishing attacks which ask for login details to gain access to accounts.

But more sophisticated phishing attacks which also ask for the token passcode and then act on the information quickly, or programs which sit on a computer and monitor PayPal logins, could leave accounts vulnerable to fraudsters.

full story: BBC NEWS | Technology | PayPal introduces security token