Redmi, a Xiaomi spin-off phone brand, says it has made in-display fingerprint sensors that work with LCD screens. Previously, only OLED screens supported them.

Thanks to a new technology that Xiaomi's Redmi is showing off, using an under-display fingerprint sensor may be possible with LCD displays.

Xiaomi sub-brand Redmi has demonstrated an LCD smartphone with an in-display fingerprint sensor. This could bring the tech to much cheaper phones.

In fact, some time ago Oppo showcased a "wide zone" optical fingerprint sensor, which recognises an area up to 15 times bigger than current sensors.