{"id":3982,"date":"2017-11-30T10:32:16","date_gmt":"2017-11-30T05:02:16","guid":{"rendered":"https:\/\/www.innovationm.com\/blog\/?p=3982"},"modified":"2023-01-20T18:55:51","modified_gmt":"2023-01-20T13:25:51","slug":"local-authentication-in-ios","status":"publish","type":"post","link":"https:\/\/www.innovationm.com\/blog\/local-authentication-in-ios\/","title":{"rendered":"Local Authentication in iOS"},"content":{"rendered":"

Local Authentication in iOS<\/strong><\/p>\n

In a Nutshell, Local Authentication in iOS is a framework which we use to validate genuine user through passphrase (i.e. passcode) or TouchID. TouchID and RetinaID belong to biometric criteria.\u00a0 So, If you have got a requirement to integrate a User Validation then use this Local Authentication. Or, You can also invent the complete new wheel, but in such cases, you’re assuming your user should remember the authentication code\/pattern of your app which is not a good idea.<\/p>\n

\"\"<\/p>\n

LocalAuthentication.swift<\/strong><\/p>\n

Don’t panic, it’s\u00a0 just a wrapper file around Local Authentication ‘s behavior to create an abstraction.\u00a0 You just need to access authenticate(handler:) method of this class to authenticate the user. Yes, a single method will do the task for you.<\/p>\n

If You want to use in any of your projects, just add this file and follow single method call.<\/p>\n

LocalAuthentication.authenticate { (hasAuthenticated, error) in\r\n\r\n            if hasAuthenticated {\r\n                print(\"Success\")\r\n            }\r\n            else {\r\n                print(error)\r\n            }\r\n}<\/pre>\n
 <\/p>\n
It is obvious Authentication can fail. And, there are various reasons to fail. So, what are they?<\/p>\n
1. AppCancel<\/strong>
\n– Authentication was canceled by the application (e.g. invalidate was called while
\nauthentication was in progress).<\/p>\n
2. Authentication failed<\/strong>
\n– Authentication was not successful because user failed to provide valid credentials.<\/p>\n
3. Biometry Lockout<\/strong>
\n– Authentication was not successful because there were too many failed biometry attempts and biometry is now locked. Passcode is required to unlock biometry<\/p>\n
4. Biometry Not Available<\/strong>
\n– Authentication could not start because biometry is not available on the device.<\/p>\n
5. Biometry Not Enrolled<\/strong>
\n– Authentication could not start because biometry has no enrolled identities.<\/p>\n
6. Passcode Not Set<\/strong>
\n– Authentication could not start because passcode is not set on the device.<\/p>\n
7. System Cancel<\/strong>
\n– Authentication was canceled by the system (e.g. another application went to foreground).<\/p>\n
8. User Cancel<\/strong>
\n– Authentication was canceled by the user (e.g. tapped Cancel button).<\/p>\n
9. User Fallback<\/strong>
\n– Authentication was canceled because the user tapped the fallback button (Enter Password).<\/p>\n
But, in the authenticate(handler:) method of LocalAuthentication.swift you will get a type of AuthenticationError which is a custom enum type.<\/p>\n
Source Code<\/b><\/p>\n
https:\/\/github.com\/greenSyntax\/ios-source\/tree\/master\/LocalAuthentication<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Local Authentication in iOS In a Nutshell, Local Authentication in iOS is a framework which we use to validate genuine user through passphrase (i.e. passcode) or TouchID. TouchID and RetinaID belong to biometric criteria.\u00a0 So, If you have got a requirement to integrate a User Validation then use this Local Authentication. Or, You can also […]<\/p>\n","protected":false},"author":1,"featured_media":3988,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[226,228,227,229,230,231],"class_list":["post-3982","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ios","tag-biometric","tag-finger-print-in-ios","tag-local-authentication","tag-passcode","tag-passphrase","tag-user-authentication"],"yoast_head":"\nLocal Authentication in iOS - InnovationM - Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.innovationm.com\/blog\/local-authentication-in-ios\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Local Authentication in iOS - InnovationM - Blog\" \/>\n<meta property=\"og:description\" content=\"Local Authentication in iOS In a Nutshell, Local Authentication in iOS is a framework which we use to validate genuine user through passphrase (i.e. passcode) or TouchID. TouchID and RetinaID belong to biometric criteria.\u00a0 So, If you have got a requirement to integrate a User Validation then use this Local Authentication. Or, You can also […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.innovationm.com\/blog\/local-authentication-in-ios\/\" \/>\n<meta property=\"og:site_name\" content=\"InnovationM - Blog\" \/>\n<meta property=\"article:published_time\" content=\"2017-11-30T05:02:16+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-01-20T13:25:51+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.innovationm.com\/blog\/wp-content\/uploads\/2017\/11\/Local-Authentication.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1140\" \/>\n\t<meta property=\"og:image:height\" content=\"633\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"InnovationM Admin\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"InnovationM Admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.innovationm.com\\\/blog\\\/local-authentication-in-ios\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.innovationm.com\\\/blog\\\/local-authentication-in-ios\\\/\"},\"author\":{\"name\":\"InnovationM Admin\",\"@id\":\"https:\\\/\\\/www.innovationm.com\\\/blog\\\/#\\\/schema\\\/person\\\/a831bf4602d69d1fa452e3de0c8862ed\"},\"headline\":\"Local Authentication in iOS\",\"datePublished\":\"2017-11-30T05:02:16+00:00\",\"dateModified\":\"2023-01-20T13:25:51+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.innovationm.com\\\/blog\\\/local-authentication-in-ios\\\/\"},\"wordCount\":352,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/www.innovationm.com\\\/blog\\\/local-authentication-in-ios\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.innovationm.com\\\/blog\\\/wp-content\\\/uploads\\\/2017\\\/11\\\/Local-Authentication.png\",\"keywords\":[\"Biometric\",\"Finger Print in iOS\",\"Local Authentication\",\"Passcode\",\"Passphrase\",\"User Authentication\"],\"articleSection\":[\"iOS\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.innovationm.com\\\/blog\\\/local-authentication-in-ios\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.innovationm.com\\\/blog\\\/local-authentication-in-ios\\\/\",\"url\":\"https:\\\/\\\/www.innovationm.com\\\/blog\\\/local-authentication-in-ios\\\/\",\"name\":\"Local Authentication in iOS - 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