Scandinavian post offices are using mobile phones to lick the problem of buying stamps. Denmark and Sweden are introducing a system of paying the postman via text.
Danish service Post Danmark and Swedish postal service Posten AB are adopting the high-tech system to make it easier to post letters, packages, and cards.
The system will work by sending you a code to write on your letter. Danes simply stick the letter, card, or parcel--up to 4.4 pounds--in an envelope, as normal, then text-message the word "porto" to the number 1900. Then they receive a unique code to write where the stamp previously would have gone and pop their goods in a mailbox as usual.
Read more of "Text messages replacing stamps for Scandinavian posties" at Crave UK.