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Compaq Computer Corp

Patents indexed

Year range

2001

consumer_electronicssoftwaretelecommunicationsai_ml

Key Inventors

Andrei Z. Broder1 Krishna Bharat1 Mark D. Lillibridge1 Martin Abadi1

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1 patents, in 2001

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2001 — How Websites Use Distorted Text Riddles to Stop Bots

US 6195698·2001

How Websites Use Distorted Text Riddles to Stop Bots

This patent describes the original method for creating CAPTCHAs, using distorted text or audio riddles to distinguish human users from automated bots.

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Compaq Computer Corp

1 patents, in 2001

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