Tag-It is a Security Seal or Key Tag carrying a unique PIN number, which is attached to a mobile phone, keys or other property. Should the item be lost, and later found, the PIN number is used to trace the owner. Tag-Its carry an 0800 FREEPHONE number, which a finder can call 24 hours a day, 365 days of the year. Our operators identify the registered owner from our computer database and contact the owner, to advise the location of the property. London Transport alone have around 45 phones handed in as lost property, EVERY day.