On Kuro5hin, a good how-to for hacking Canon copiers at copy-shops to give you free copies -- and to get them to do fun stuff.
The copy machines you are using are configured in a certain way to use a coin operated slot, key card, or service key (such as those that Kinkos has). Through an interesting "feature" in the firmware, if the copy machine is configured to accept coins or keys, and no machine is hooked up for this, it will give copies for free. Unfortunately, this isn't as helpful as it sounds; anyone with a remedial amount of intelligence who wants to get free copies will try unplugging the instrument first and foremost. As such, it is often impossible without a service key to unplug the apparatus.
Fortunately, there is a work-around. Go into "Service Mode" (using star-2 and 8-star), and push the "Option" tab. Underneath it, push "Acc". A new menu will pop up. Hit the "Coin" button, and enter "0" on the keypad. Once you are done, hit "Enter" or "Apply" (you MUST do this after you change any field; otherwise it will reset the next button you push). Once you are done, hit reset until you are on the main screen. Voila - free copies!
I asked Amy Parness, the co-founder of Sparkle Labs, maker of fantastic educational electronics kits, to write a Medium post about gender and the business of being a maker business person. Her terrific essay calls out the problems with “pink girly engineering kits.” From Medium:
Zero UI is the new term for “invisible interfaces”—what happens in the future when all the clicking and tapping and typing is history: “If you look at the history of computing, starting with the jacquard loom in 1801, humans have always had to interact with machines in a really abstract, complex way.” [Fast Company]
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