lock down

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lock down

To restrict the functionality of a system. If network administrators lock down client desktops, it means that users can perform only certain operations. For example, they might not be able to install new applications. The term is also used to configure a computer or service to prevent unwanted intrusions such as viruses or spam. In such cases, the system may be said to be "locked down."

Lock Down vs. Lock Up
Lock down deals with restrictions, whereas "lock up" refers to not working (see abend).
References in periodicals archive ?
Moreover, the company also took a dig at Apple and said that keeping users' privacy and security in mind, it will store the facial data used to unlock the device on the Titan M chip on the phone.
"As you reach for Pixel 4, Soli proactively turns on the face unlock sensors, recognizing that you may want to unlock your phone," Barbello wrote.
In order to unlock Bad JuJu, a total of 18 tributes need to be placed, including 5 Warbeast Tributes.
As they explore the car, they find the door of the car unlocked.
'We have been assisting customers at the end of their subscription period who have been asking to unlock their phones,' Isberto said on Tuesday.
Further, the circular mandates PTEs to unlock eligible devices or initiate a request to the equipment manufacturer within two business days after receiving a request.
UNLOCK, which is being held in its second year, has announced the participation of over 56 global and regional speakers that include prominent blockchain names.
With iOS 12 on Apple devices, owners can now instruct Siri to unlock their vehicle, check estimated mileage, and enable the Flash or Honk & Flash commands.
Users can set up Face Unlock by going to the "Security & Privacy" submenu in Settings.
facial profile, users have two options to use Face Unlock: "Direct Unlock" and
Honor is and always will be at the forefront of technological innovation, and this Face Unlock feature is no exception.
Huawei has introduced two software upgrades for Mate 10 Lite devices - an AR lens feature for creative selfies and a face unlock option, to unlock the device in 800 milliseconds.