A technique for printing postage and other value indicia at a user location. A user at a user computer acquires secure postage labels having one or more security features such as serrated edges, a microprint strip, a color fiber, taggants, a watermark, a hologram, or a fluorescent stripe. The labels have associated serial numbers, possibly at the sheet or individual label level. The user establishes communication with a postage vendor system (PVS), which may include one or more servers, and requests one or more indicia. The user also provides one or more serial numbers for the label(s) or label sheet(s) on which the one or more indicia are to be printed. The PVS determines if the one or more serial numbers are valid, and if so, generates information for printing the one or more indicia and then sends the information to the user computer. The information preferably includes a digital signature for each indicium, which may incorporate the serial number. The user computer receives the information and prints the one or more indicia on one or more postage labels.