Vivo was the first company to officially come up with a smartphone — Vivo X20 Plus UD in 2018 — carrying an in-display fingerprint sensor and it has been already 2 years and running since the tech came into existence.
While the in-display fingerprint scanner somehow made smartphones look cool, it never made to a device with an LCD panel due to structural issues. However, it’s finally being integrated into an LCD. Redmi’s brand manager, Lu Weibing would even demonstrate how it performs on a Redmi Note 8 Pro prototype.
With an LCD screen, the issue comes down to the backlight module, which interferes with the optical fingerprint sensor. But the company has solved this caveat and is looking forward to bring it under mass production.
Back then, a number of companies based in China had already found the solution on how to put the fingerprint scanner under LCD displays, and it seems Redmi certainly will be first to bring it upfront. It made the use of infrared high-transmittance film material that allows the scanner to detect a ‘finger’.
The company didn’t reveal the device that would carry the under-display fingerprint sensor beneath an LCD display. However, by the looks of it, the tech is probably arriving too late to come inside Redmi Note 9, but we can hope to see it in other Redmi devices soon this 2020.