The incident also increased pressure on news photo editors, who select and edit thousands of photographs under deadline each day, to detect digital alterations.

Gambling establishments keep close track of machine payouts in an attempt to detect such alterations.

Halochromic substances detect alterations in the acidity of substances, like detection of corrosion in metals.

With a grant from the Federal Bureau of Investigation, which is interested in ways of authenticating digital images presented in court, Dr. Farid is devising algorithms to detect alterations.

"We're getting real familiar with the documents," said Jesus I. Solis, an agent on duty one recent afternoon, who voiced confidence that he could detect alterations and forgeries.

At the institute, technicians use infrared light to detect alterations made to documents.

Since this was a space station, there were devices all over that should detect unusual alterations in air circulation.

This is a fourteen-item, screening inventory, designed to detect alterations in mood, specifically states of anxiety and depression.

The purpose of this study was to detect alterations in host cell gene expression that occur in response to P. carinii infection.

The purpose of this project was to develop an effective and convenient process to detect both large and small alterations in the DMD gene with only a moderate increase in cost.