Canada Post introduced new "computer vended stamps", available from select "kiosks".

This is what I have learned from a very trusted source (he has used the machine and passed along the stamps to me that are illustrated above)...
The first day of issue is/was Dec 12, 2012.
Canada Post has prepared OFDCs which will be sold through the NPC but mint stamps will not be offered.
Toronto is one of the locations with 3 kiosks. The kiosks are located at Station B (on Adelaide St. W. near Spadina Ave.), TD Centre Post Office (on the Concourse Level below Bay St) and the Adelaide Post Office (on Adelaide St. E. near Victoria St.).
The stamps were printed in rolls of 5000 without the bar code and denomination.
Approximately every 18 stamps, one- or two- black 'guidelines' will appear on the self-adhesive stamp (not illustrated here).
German based, the machine offers 3 preset lettermail denominations: domestic, U.S., international. The customer may purchase one stamp but the minimum denomination is the domestic rate. Payment by credit or debit card.
Stamps are dispensed 'singly' (i.e. there are no multiples). You can purchase the domestic, US, International in quantities (i.e. 25 at a time, but they are still dispensed singly).
You can also get domestic oversize up to 500grams (I believe) after weighing and measuring a single piece of mail. Thus, if you wante to mail 10 oversize items you need to do 10 different transactions.
After 3 transactions you must pay. Thus, if you are mailing 10 oversize, it will take you quite awhile (i.e. weigh and measure and item times 3, pay, then repeat until your 10 items have been done).
There are or will be 8 locations: Toronto (the 3 corporate post offices mentioned above), London (1 corporate post office) and Vancouver (2 corporate post offices, one with 2 kiosks, and 2 franchises – a total of 5 kiosks).
The three kiosks in Toronto are operational as well as the one in London. Which kiosk is operational in Vancouver is unknown but all kiosks should be operational by the end of January.
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The USA (and other countries) have been doing this for quite sometime.
For (at least) the USA, Scott Publishing has assigned numbers for the basic designs in a back-of-the-book section, with CVS-numbers.