Phones, Retinal Scans Could Soon Replace Your Car Keys

https://www.extremetech.com/wp-content/uploads/2017/09/Gentex-Retinal-Scan-768x424.jpg 768w, https://www.extremetech.com/wp-content/uploads/2017/09/Gentex-Retinal-Scan-640x353.jpg 640w, https://www.extremetech.com/wp-content/uploads/2017/09/Gentex-Retinal-Scan-106x59.jpg 106w, https://www.extremetech.com/wp-content/uploads/2017/09/Gentex-Retinal-Scan-672x371.jpg 672w, https://www.extremetech.com/wp-content/uploads/2017/09/Gentex-Retinal-Scan.jpg 1344w" sizes="(max-width: 300px) 100vw, 300px" /> Your wireless car key never leaves your pocket anyway, so why not let your phone start the car, BMW suggests. NFC cards would be backups. Gentex wants you to look