At 7:54 PM 3/31/96, Jim Choate wrote:

Forwarded message:

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Presumedly the state of the EEPROM cannot be deduced by any external examination of the card, and any attempt to incrementally abrade the card down to the relevent circuit elements should completely obliterate the minute charge differences which represent the data.

They aren't immune to the laws of physics. If it can be put together, it can be taken apart. I can even surmise HOW it can be taken apart.

You wouldn't even have to take it apart. Just subject it to analysis using SQUID's. Using this technology you would not even have to physicaly touch the card, let alone remove any parts of it.

Well, I worked on SQUIDs (Superconducting quantum-interferometric devices) in 1972-3, and also worked on electron-beam analysis of microprocessors and memory device in 1980-84, and I can assure you that SQUIDs cannot do what you want them to do. I'll be happy to supply additional details if there's sufficient interest. --Tim May Boycott "Big Brother Inside" software! We got computers, we're tapping phone lines, we know that that ain't allowed. ---------:---------:---------:---------:---------:---------:---------:---- Timothy C. May | Crypto Anarchy: encryption, digital money, tcmay@got.net 408-728-0152 | anonymous networks, digital pseudonyms, zero W.A.S.T.E.: Corralitos, CA | knowledge, reputations, information markets, Higher Power: 2^756839 - 1 | black markets, collapse of governments. "National borders aren't even speed bumps on the information superhighway."