A defendant can be compelled to produce material evidence that is incriminating. Fingerprints, blood samples, voice exemplars, handwriting specimens, or other items of physical evidence may be extracted from a defendant against his will.
As you might expect, I see a problem (and a pattern!) with even these examples. Notice that with the possible exception of "handwriting specimens", the examples above all represent pieces of evidence whose utility was only made technologically possible by developments done more than a century after the writing of the Constitution. Fingerprints have
I think you missed the main pattern... When a suspect is required to provide fingerprints, voice, blood and/or handwriting samples, those things are used exclusively for _identification_. The only exceptions I can think of are when blood, breath and urine samples are taken from a suspect to detect certain chemicials in the body. But, AFAIK, those exceptions are entirely the product of the recent war on drugs. Just my two bits. IANAL. ===================================================================== | Steve Reid - SysAdmin & Pres, EDM Web (http://www.edmweb.com/) | | Email: steve@edmweb.com Home Page: http://www.edmweb.com/steve/ | | PGP Fingerprint: 11 C8 9D 1C D6 72 87 E6 8C 09 EC 52 44 3F 88 30 | | -- Disclaimer: JMHO, YMMV, IANAL. -- | ===================================================================:)