21.   Clinton made news in signing a law validating digital signatures, and even more news when he promised to veto two Republican tax cuts passed this month by Congress.

22.   Digital signatures are created by complex cryptographic codes and are designed to mimic pen-and-paper signatures.

23.   Digital signatures.

24.   Despite their technical sophistication, digital signatures are today used by only a small group of computer security professionals.

25.   Each barcode has a unique digital signature to prevent fraud.

26.   Every opinion stored at this site features a digital signature created with the Pretty Good Privacy encryption program.

27.   He also fought to save a digital signature bill.

28.   If more high-value communications are shifted to the Internet, firms that provide encrypted e-mail, digital signatures and other security features stand to benefit, too.

29.   Instead, legitimate ActiveX programmers add digital signatures, chunks of encrypted code that are nearly impossible to fake.

30.   It is but a short step to true electronic checks authenticated by a digital signature that can be transmitted to the payee, endorsed and deposited over the Internet.