Thank you for reaching out to the Samsung community! As per your query we would like to inform you that Tab S4 has Iris unlock and Face unlock security. For more details, please refer our official website (link- https://www.samsung.com/in/tablets/galaxy-tabs4-t835/SM-T835NZAAINS/) Be sure to hit ♡ when you find an answer that works for you. Further assistance, you can get in touch with us via Live Chat option by following- http://livechat.support.samsung.com/Customer_new/IN. You can also connect us via Samsung Members web community by following mentioned url-https://community.samsungmembers.com/en_IN#/
