Sub Rosa for Android

PKard Reader AppSub Rosa v4 for Android

**COMING SOONA subscription feature which will allow you to sign and edit PDF documents with our Sub Rosa suite of apps. LEARN MORE HERE** 

The U.S. engineered Sub Rosa® secure web browser supports web site access from an Android device with strong, two-factor authentication using a CAC or PIV. Sub Rosa is the only mobile browser available that allows you to sign/encrypt/decrypt email through Outlook Web Access (OWA). New features in v4 also give you full access to your OWA calendar, allowing you to view, create, and respond to calendar events. It is FIPS 140-2 validated and approved under DISA's DoD Mobile App Store. The browser also acts as an authentication agent, smoothly coordinating reader and card access to an optional secure app ecosystem.

A Sub Rosa license is bundled at no additional cost with the Android PKard Readers including micro-USB and USB-C dongles, case for the Samsung Galaxy S7 and case for the Samsung Galaxy S9.

U.S. phone and email technical support is included at no additional cost.


Sub Ros Pro Enterprise Mobility Management option    Sub Rosa Pro Enhanced OWA Viewer    Sub Rosa Pro Email Draft    Sub Rosa Pro Calendar Options    Sub Rosa Calendar Month ViewFIPS

Part number ANS104-PA from GooglePlay (bundled with a licensed reader at no additional cost)


Available on the App Store


  • **COMING SOON** A subscription feature which will allow you to sign and edit PDF documents with our Sub Rosa suite of apps. Click HERE to learn more.
  • Android 6.0 or higher, tablet or smartphone, leveraging fully supported commercial software with a ten-year history
  • Full access to OWA calendars so you can view, edit, create, and respond to events
  • Sign, encrypt, decrypt email including the ability to configure zero-data-at-rest on the device
  • Bundled with the Android PKard Reader Family including PKard Reader Cases for Samsung Galaxy S7 and S9
  • Secure browser - supports Microsoft Outlook Web Access (OWA) web email, SharePoint portals and collaboration sites e.g. AKO, NKO and AF Portal
  • Multi-certificate - supports CAC, CAC Dual Persona, PIV, PIV-I, and derived credentials
  • Multi-app - part of a secure Android app ecosystem leveraging the PKard Toolkit for Android
  • Made and supported in the USA by specialists from Arlington, Texas

Additional capabilities

  • Supports industry and U.S. government standards including HSPD-12, OMB-11-11, and FIPS 140-2
  • Custom builds are available for organizations, either standalone, or as part of third party mobile management solutions
  • Available in the Google Play Store

Selected Quotes

  • " Amazing improvements ... I can now easily check my mail on my smartphone."
  • “PKard Browser has been a lifesaver”
  • "By 2017, the browser on mobile endpoint devices will be used as a sophisticated application delivery platform, with 50 percent of new web apps involving complex client-side JavaScript."


PKard For Android





  • Sub Rosa Pro for all other Android devices and reader types - here
  • iOS secure mobile CAC/PIV smart card web browser & authentication agent app - here

More information



User Guide








Sign, Encrypt, and Decrypt Email on a Mobile Device

Tired of dragging your laptop around? Learn how you can access your calendar and sign, encrypt, and decrypt email with your CAC, PIV, or Derived Credential (such as Purebred) from any mobile device.

Provisioning a Derived Credential with QR Code

This video shows how you can use a QR Code to load a derived credential into the Thursby PKard apps on iOS or Android.

Sub Rosa for Android Demo

This short video takes you through the new features in Sub Rosa. Sign, encrypt, decrypt email and browse to secure websites with a CAC or PIV.