All, I am wondering if anyone here knows anything about the amount of drivre signal that needs to be fed to a Magnetic Stripe Recording Head to allow it to record onto a magnetic substance similar in properties to the magnetic stripe like on the back of credit cards or ID cards, etc.? I want to use a mag card head because of the mounting mechanism on the head itself. I plan to record onto a piece of paper that has metallic particles glued to it's surface. If this works like I want it to, I can put together a demonstration that will be interesting for all. I've checked the web, and have found the ISO standards that are followed by the Mag Card industry, but I don't see mention of the signal strength to apply to the recording head anywhere in those documents. Unless I missed it, this info just isn't there. This is for a demonstration and possible utilization later, but in no way do I have anything illegal planned for this unit. It's mostly to prove a point to myself, and to a couple of skeptic brothers-in-law that think they have it figured out that this won't work. I plan to prove them wrong. If anyone has this info, I would appreciate hearing it. You can reply offline to me at jim@jpes.com. Thanks and Regards, Jim -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist