If you're to take Always-On applications into the world with you, they have to be fashionable. They have to look smart. It would be very nice if they were machine washable.

Now they are.

Eleksen , located at Pinewood Studios west of London, is marketing a line of fabric sensors and switches.

What would you use this stuff for?

• How about letting you know if your recliner is about to tip over the wine?
• How about letting a movie chain know exactly how many people are sitting in each theater?
• Has grandma wet herself again? Don't wait for her to tell the orderly.
• Put a sensor on an air mattress and it will automatically re-inflate.

Here's a Clue for you, Robin. Medical. Sensors on clothes that detect medical conditions, with Bluetooth that links them to networks that can act on new data. (The same technology that links a headset to your radio can also link your clothes to mobile data.) Combine the usefulness of your medical line with the fashion sense of sportswear, so middle-aged sportsmen (with the conditions of middle age) can exercise securely.

Imagine. A middle-aged man puts on a biking shirt equipped with a heart monitor. The shirt detects the pre-conditions of a heart attack, sends the rider's position via GPS, and the ambulance is waiting before he even knows a heart attack has started, when there is still time to save his life.

Talk about a killer app!

You will make a fortune. I'll take several, in different colors. Assuming they don't make me look fat.