{"id":1485,"date":"2014-11-21T22:38:09","date_gmt":"2014-11-21T22:38:09","guid":{"rendered":"http:\/\/41j.com\/blog\/?p=1485"},"modified":"2014-11-21T22:38:09","modified_gmt":"2014-11-21T22:38:09","slug":"inside-a-1usd-fingerprint-reader","status":"publish","type":"post","link":"https:\/\/41j.com\/blog\/2014\/11\/inside-a-1usd-fingerprint-reader\/","title":{"rendered":"Inside a 1USD Fingerprint reader"},"content":{"rendered":"<p>I picked up a finger print scanner on a whim in Akihabara the other day, it was only a dollar so I figured what the hell.<\/p>\n<p><a href=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2014\/11\/finger1-e1416608826548.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2014\/11\/finger1-1024x768.jpg\" alt=\"finger1\" width=\"700\" height=\"525\" class=\"aligncenter size-large wp-image-1486\" \/><\/a><\/p>\n<p>Looks pretty normal. I figured it would have a cheap USB controller inside.<\/p>\n<p><a href=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2014\/11\/finger2-e1416608865851.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2014\/11\/finger2-e1416608865851-1010x1024.jpg\" alt=\"finger2\" width=\"700\" height=\"709\" class=\"aligncenter size-large wp-image-1487\" srcset=\"https:\/\/41j.com\/blog\/wp-content\/uploads\/2014\/11\/finger2-e1416608865851-1010x1024.jpg 1010w, https:\/\/41j.com\/blog\/wp-content\/uploads\/2014\/11\/finger2-e1416608865851-295x300.jpg 295w, https:\/\/41j.com\/blog\/wp-content\/uploads\/2014\/11\/finger2-e1416608865851-300x304.jpg 300w, https:\/\/41j.com\/blog\/wp-content\/uploads\/2014\/11\/finger2-e1416608865851.jpg 1183w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><\/p>\n<p>Model NEC PU800-30-S02. Hmm 2.5W&#8230; that seems kind of high&#8230;<\/p>\n<p><a href=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2014\/11\/finger3-e1416608893488.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2014\/11\/finger3-e1416608893488-1024x579.jpg\" alt=\"finger3\" width=\"700\" height=\"395\" class=\"aligncenter size-large wp-image-1488\" srcset=\"https:\/\/41j.com\/blog\/wp-content\/uploads\/2014\/11\/finger3-e1416608893488-1024x579.jpg 1024w, https:\/\/41j.com\/blog\/wp-content\/uploads\/2014\/11\/finger3-e1416608893488-300x169.jpg 300w, https:\/\/41j.com\/blog\/wp-content\/uploads\/2014\/11\/finger3-e1416608893488.jpg 1558w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><\/p>\n<p>It&#8217;s got an FPGA in it!! Which explains the 2.5W I guess!<\/p>\n<p><a href=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2014\/11\/finger4-e1416608928215.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2014\/11\/finger4-1024x768.jpg\" alt=\"finger4\" width=\"700\" height=\"525\" class=\"aligncenter size-large wp-image-1489\" \/><\/a><\/p>\n<p>Not only that but a PXA255 too. Crazy powerful for what I assumed was a relatively dumb device.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I picked up a finger print scanner on a whim in Akihabara the other day, it was only a dollar so I figured what the hell. Looks pretty normal. I figured it would have a cheap USB controller inside. Model NEC PU800-30-S02. Hmm 2.5W&#8230; that seems kind of high&#8230; It&#8217;s got an FPGA in it!! [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-1485","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1RRoU-nX","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/1485","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/comments?post=1485"}],"version-history":[{"count":1,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/1485\/revisions"}],"predecessor-version":[{"id":1490,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/1485\/revisions\/1490"}],"wp:attachment":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/media?parent=1485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/categories?post=1485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/tags?post=1485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}