The Finns have given a lot to the world of technology; Nokia, Linux, the first auction of 3G licences to name but a few. But this latest idea for mobile phone security is rather too silly to make it into practical applications.

Leaving aside the fact that there's enough mobile security tools out there (if only the manufacturers would actually use some of them) the idea of using someone's gait as a security tool is just plain odd. Biometric security needs to rely on physical constants – iris, fingerprints and vein structures. Imagine having one of these phones and twisting your ankle for example. You'd have to put in a password every time you used the phone.

As a final point I've been to Finland a lot and learnt early on to never, ever try to drink level with the Finns. Maybe it's the long, dark winters. Maybe it's the endless combinations of fish, reindeer and cloudberries that come with every meal. Whatever it is you can see more respectable men and women falling down drunk in the streets of Helsinki than anywhere else in Europe.

Try using your walk-secure mobile when you are, to use the lovely Irish expression, drink taken – or even try to remember the password…