Microsoft is developing a power button for laptops that also has a fingertip sensor

Microsoft is working on a method to authenticate a user on a device by using a fingerprint reader on its power button. The tech, described in great detail in a recently published paper, has been patented under the name of Power Key and Fingerprint Reader, and it explains how a device uses a fingerprint reader in the power button to verify a user’s identity.

The power button – fingerprint sensor technology would activate the fingerprint sensor everytime a user presses the power button on their device. The fingerprint reader integrated into the button would turn on. A light (visual indicator) on the power button would also light up to show that the fingerprint reader is ready to use.

The paper describes what happens when the PC goes on standby. While the fingerprint reader is active, the usual standby function of the power button (which might put the device to sleep or wake it up) is temporarily turned off. This means the power button won’t perform its normal function now.

The process of validating one’s identity is as simple as any other fingertip reader currently on the market: you place your finger on the reader, which scans your fingerprint. The device uses this fingerprint scan to verify your identity. If the fingerprint matches the one stored on the device, you are authenticated (logged in or given access).

Once you’re authenticated, the light on the power button turns off. The power button’s normal standby function is turned back on, so it can be used as usual again.

This method ensures that the fingerprint reader is only active when needed, provides visual feedback to the user, and ensures the power button usually works after authentication. This setup is designed to enhance security while maintaining convenience.

The technology is highly possible due to Microsoft’s growing stance on a passwordless future, meaning fewer passwords and more emphasis on Windows Hello and alternative authentication models based on personal identity.

There are already Windows 11 devices that use a fingertip reader for authentication, but they’re separate from the power button for obvious reasons.

This tech especially would greatly strengthen the security of anyone’s devices and and laptops. In case of losing or having someone steal it, the power button, which also functions as a fingertip reader, would stop anyone from infiltrating and accessing the device.

You can read the paper here.