I saw an article the other month about how Mastercard has started trialling a payment card that uses the same fingerprint-scanning technology as mobile phones to verify cardholders’ identities. The payments giant said the biometric card would help deliver “additional convenience and security” and “help cardholders get on with their lives knowing their payments are protected”.
The beauty of shopping online is that you can buy whatever you want, whenever you want, from wherever you want. When you sell online, you have the opportunity to reach customers far beyond the confines of your own city or national borders. There are millions, maybe billions, of people out there who want what you are selling.
But how do you know what they are looking for? How quickly do they...