diff --git a/README.md b/README.md
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 # RFIDtools
-RRG Android App for use with Proxmark3 RDV4 and the blueshark addon
+RRG Android App for use with the following devices
+
+- Proxmark3
+- NFC Reader 
+- ACS ACR-122u
+- Chameleon Mini
+- PN532
 
 The app runs on a non-rooted phone.
 
-## Google playstore
+
+## APK download at Google playstore
 You find the app on playstore  [RRG RFID Tools](https://play.google.com/store/apps/details?id=com.rfidresearchgroup.rfidtools&hl=en_US)
 
-
-
 ## Special firmware
-Until some android issues is resolved with the RRG/Iceman repo,  you must use a special android adapted firmware with your Proxmark3 RDV4.  
+To use your Proxmark3 RDV4 with blueshark via bluetooth with this app there is an extra step.
+Until some android issues is resolved with the RRG/Iceman repo you must use a special android adapted firmware with your Proxmark3 RDV4.  
 
 Download and flash this one
 [Compiled FW 12 August](https://www.dropbox.com/s/416lsrqpr2lfeis/%5BCompiled%5DPM3-RRG-20190812.rar?dl=0)
 
+## Where to buy these devices?
+- www.sneaktechnology.com
+
+## Developement tools
+
+## Core implementation
+
+## Maintainer
+- DXL
+
+## Compability
+These Android phones has been tested with