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A roundup of the latest high-tech news “Hot off the Wire” from The Associated Press and Local Tech Wire:

• Private equity firms buys LANDesk

SALT LAKE CITY — Private equity firm Thoma Bravo has agreed to acquire the unit from Emerson Electric Co.

Financial details of the deal were not disclosed.

The acquisition is expected to close by the end of September, LANDesk said Monday.

LANDesk, which provides computer security and management products for desktops, servers and mobile devices, has about 750 employees worldwide.

Shares in Emerson Electric rose 28 cents to $47.38 in aftermarket trading after adding 42 cents to $47.10 during the regular session.

• 24 Hour Fitness adds bio-scanners for ID

SAN RAMON, Calif. — Members of the 24 Hour Fitness chain no longer need to worry about forgetting their membership cards and IDs when they go to the gym: All they need to bring are their fingers.

The San Ramon-based company is now using fingerprint scanners at its 60 San Francisco Bay area locations to verify members’ identities. It also has started offering so-called “Cardless Check-In” this month at some gyms in other states.

To enter the gym, 24 Hour Fitness members need to punch in a 10-digit code and have an index finger scanned by a device that compares the fingerprint to one on file.

Company officials say the voluntary program allows members to show up without ID, prevents nonmembers from sneaking in, and saves the cost of making and mailing club cards.

The scanners underscore the growing use of biometric technology, which uses unique physical features such as hands, eyes and faces to identify people.

The technology’s increased accuracy and affordability has allowed it to move beyond police and military applications, with backers calling it a potential solution to identity theft.

Biometric devices are now used by companies to have employees clock in and out, by schools to restrict access to subsidized lunches and by Walt Disney World to identify pass-holders.

• Flat-panel firm sues Sony in patent fight

DOVER, Del. — Taiwanese flat-panel display maker Chimei Innolux has filed a lawsuit in Delaware expanding its patent-infringement dispute with Sony.

The federal lawsuit filed Monday accuses Sony Corp. of violating three patents owned by Chimei Innolux Corp. in the manufacturing of products including televisions, notebook computers and Cyber-shot digital cameras.

Chimei filed a similar federal lawsuit in Arkansas last month accusing Sony of violating three different patents.

The lawsuits follow a complaint filed by Sony in March with the U.S. International Trade Commission accusing Chimei and other companies of violating several Sony patents involving digital televisions and monitors.

Meanwhile, Arkansas’ attorney general said last week that he is joining his counterparts in four other states suing Chimei and other makers of liquid crystal display panels over alleged price fixing.