ADL-1 One Time Pad Printer


A One Time Pad is an ‘old school’ tool and a method of encrypting messages.  Be ready to create pads for your next mission…


Available on backorder

SKU: ADL-1 Categories: ,


One Time Pad (OTP) is an ‘old school’ tool and a method of encrypting messages.  As long as the actual One Time Pad is kept secure, the message will be unbreakable.  The challenge of using this method is generating truly random sets of numbers. It can be very time consuming and redundant.  The ADL-1 One Time Pad machine makes it as easy as the touch of a button, and it is FIELD PORTABLE!

If you would like to order by mail, instructions are here.

If you would like to purchase more than 1 ADL-1 please purchase each one individually.

Files and Support Information

Source code, schematics, etc… are available here.


NC Scout’s review on

See here for warranty information.


Size (W x L x H ):                                       8.7 x 7.5 x 3.9 inches

Weight with paper and batteries:      2 lbs, 6 oz

External Power:                                       12 – 13.8 vdc. 2.1 mm center positive, 2 amps

Batteries:                                                   2 18650 2400ma or better Li-Ion batteries ( included )

Paper size ( W, L):                                    2.25 x 1.5 inches ( about 40 ft with core, 70 ft coreless )

Battery Chargers

The ADL-1 does not have in internal battery charger. The included batteries can be charged with an external charger. Here are some of the ones we use here.

Additional information

Weight 40 oz