--- title: Protect & Control Document Usage on Android Tablets & Smartphones | Secure Document Viewer description: Balance document security with accessibility; provide your users secure access to FileOpen-protected documents with the secure document viewer for Android from FileOpen. --- [![FileOpenLogoWhite.png](https://www.fileopen.com/hs-fs/hub/74620/file-1211236836.png?width=150&name=file-1211236836.png "FileOpenLogoWhite.png")](https://www.fileopen.com) ![Interior_2_header.png](https://www.fileopen.com/hs-fs/file-1519213070-png/2014icons/android-robot.png?width=250&name=android-robot.png "Interior_2_header.png") # FileOpen Viewer for Android ## *Protect and control documents delivered to Android devices.* Available as a [free download from Google Play](https://play.google.com/store/apps/details?id=air.com.fileopen.ios&hl=en), the FileOpen Viewer App for Android enables the secure display of documents for your mobile users. Leveraging FileOpen’s core document security technology, the FileOpen Viewer App not only protects files from unauthorized access, but also enforces policies such as document expiration, revocation and watermarking.   Securing documents for distribution to the FileOpen Viewer App requires a license to [FileOpen RightsManager™](https://www.fileopen.com/products/rightsmanager/), [RightsServer™](https://www.fileopen.com/products/rightsserver/) or [Developer Toolkit](https://www.fileopen.com/products/developer-toolkit/). [![REQUEST A DEMO](https://no-cache.hubspot.com/cta/default/74620/332b32db-7d6a-4204-afc6-d4d160df9c2e.png)](https://cta-redirect.hubspot.com/cta/redirect/74620/332b32db-7d6a-4204-afc6-d4d160df9c2e) ![samsung-with-doc](https://www.fileopen.com/hs-fs/file-2075751418-png/2014icons/samsung-with-doc.png?width=150&name=samsung-with-doc.png) ### How it Works The FileOpen Viewer App is a native Android application that supports OPN (FileOpen’s native file format). OPN is a vector display format with the same fidelity and most of the same behavior as a PDF file, with standard navigational elements.  The app operates in essentially the same way as all other FileOpen clients, authenticating users in one of two ways; either username/password dialog or a machine/device context. The first time that a user tries to open a FileOpen-protected document, they are connected to the PermissionServer. This client/server communication then allows or denies document access and applies designated usage policies. Documents cannot be opened if the user does not have explicit permission from the publisher. All permissions may be edited or revoked even after delivery. ### End-User Experience Users must first install the free [FileOpen Viewer App from Google Play](https://play.google.com/store/apps/details?id=air.com.fileopen.ios&hl=en). The device must have internet connectivity the first time a protected document is accessed to authenticate and obtain permissions. Once that document has been opened, it may be accessible thereafter when the device is disconnected, but this depends on permissions granted by the publisher. [![](https://www.fileopen.com/hs-fs/images/Android-Button.png)](https://play.google.com/store/apps/details?id=air.com.fileopen.ios&hl=en) ###### Support [Get the Plugin](http://plugin.fileopen.com/all.aspx) [Plugin FAQ](https://www.fileopen.com/products/client-faq) [Troubleshooting FAQ](https://www.fileopen.com/products/troubleshooting-faq) [Submit a Case](https://www.fileopen.com/request-tech-support) ###### Products [FileOpen RightsManager ](https://www.fileopen.com/products/rightsmanager) [FileOpen RightsServer](https://www.fileopen.com/products/rightsserver) [FileOpen Developer Toolkit](https://www.fileopen.com/products/developer-toolkit) [Solutions Overview](https://www.fileopen.com/document-security-solutions-overview) [Client Overview](https://www.fileopen.com/Products/FileOpen-client-overview) ###### About [About FileOpen](https://www.fileopen.com/company/about-fileopen) [Why FileOpen?](https://www.fileopen.com/company/why-fileopen) [Channel Partners](https://www.fileopen.com/channel-reseller-partners) [Privacy Policy](https://www.fileopen.com/company/privacy-policy) ###### Resources [FileOpen for Enterprise Rights Management](https://www.fileopen.com/document_security_solutions/secure-document-sharing) [FileOpen for Publishing & Subscriptions](https://www.fileopen.com/document_security_solutions/publishing) [FileOpen for Education & Training](https://www.fileopen.com/document_security_solutions/education) [FileOpen for Regulatory Compliance](https://www.fileopen.com/document_security_solutions/achieving-regulatory-compliance) [Document Security Blog](https://www.fileopen.com/blog) **Connect: [![twitter](https://www.fileopen.com/hs-fs/hub/74620/file-1042417441.png?width=25&name=file-1042417441.png)](https://twitter.com/fileopen)[![linkedin](https://www.fileopen.com/hs-fs/hub/74620/file-1045379402.png?width=25&name=file-1045379402.png)](https://www.linkedin.com/uas/login?session_redirect=%2Fcompany%2Ffollow%2Fsubmit%3Fid%3D680434%26fl%3Dstart%26csrfToken%3Dajax%253A5274184685996743843%26goback%3D%252Ebzo_*1_*1_*1_*1_*1_*1_*1_fileopen*5systems*5inc*3&goback=%2Ebzo_*1_*1_*1_*1_*1_*1_*1_fileopen*5systems*5inc*3&trk=biz-follow-button)** FileOpen Systems Inc. | info@fileopen.com | 1010 Fair Ave Suite A Santa Cruz, CA 95060 | 831.706.2170 ![](https://googleads.g.doubleclick.net/pagead/viewthroughconversion/1071657555/?guid=ON&script=0)