Sub Rosa for Android is only for use with one of the bundled micro-USB, USB-C, or case readers in the PKard Reader family. If you are not using a bundled Thursby PKard Reader you need Sub Rosa Pro for Android.

Are you tired of having to take your heavy laptop, tangled charger, and clunky card reader with you on trips? Do you want to send signed and encrypted emails and access PIV/CAC protected websites right from your Android phone or tablet?

With Sub Rosa for Android you can do this and more! Available at no extra cost when used with one of the bundled micro-USB, USB-C, or case readers in the PKard Reader family.

Our Android PKard Reader bundles can be found here:

Sub Rosa for Android is a strong, two-factor CAC/PIV secure authentication agent and web browser that smoothly coordinates reader and card access on your Android phone or tablet. Sub Rosa for Android provides full access to your OWA calendar. Allowing you to view, create, and respond to events from your Android phone or tablet.

You can find out more about the app here:

How does it work?

Instead of a username and password, Sub Rosa for Android uses US Government CAC or PIV smart cards and PINs with authentication to a micro-USB card reader accessory or derived credential. This allows you to log-in to two-factor websites and sign, encrypt, and decrypt email. This also gives you full access to calendaring, which makes managing and coordinating meetings easier than ever.

Thursby is the market leader in secure Apple and Android Department of Defense (DoD), government, and highly regulated enterprise integration, delivering the security features absent in native Android, Apple, and generic enterprise tools. Thursby is US owned and operated and General Services Administration (GSA) listed, delivering innovative Apple and Android products and services for over a quarter century.

US technical and commercial support is by real people, over the phone and by email from Arlington, Texas. Please contact us via, or +1 (817) 478-5070. Please visit for FAQs, guides, and other helpful information.

Supports industry and US Government standards including ISO 7816, NIST IR 6887, HSPD-12, OMB-11-11, FIPS 140-2 and FIPS 201 (with an approved reader). Most popular smart card types are supported including CAC, Dual Persona CAC, PIV, and PIV-I.

** NOTES **
• Device must support USB host mode or On-The-Go (OTG). You can find a list of known compatible devices here:
• Perceived performance depends on Wi-Fi or cell bandwidth, internet “weather” and back-end data center or cloud infrastructure
• Sub Rosa is an integral part of the PKard Toolkit for Android secure app development and policy management ecosystem
• The Google Play app is an individual/consumer distribution, custom builds are available for organizations
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What's New

Fixed crash that was occurring after latest update of Google Chrome
Updated bookmarks
General bug fixes
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Additional Information

October 22, 2018
Current Version
Requires Android
6.0 and up
Content Rating
Interactive Elements
Unrestricted Internet
Offered By
Thursby Software Systems, Inc.
4901 S. Collins St. Arlington, Texas 76018
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