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I developed an Android app for a Samsung Galaxy Tab 4 in Android 4.4. Now I'm trying to connect a RFID card reader through my microUSB port to emulate a keyboard so we can read different tags which contain different info. I'm using the Syris RD200-M1-G reader. I searched a lot in the internet and I read that is compatible with Android. My problem is that I connect it to my tab and the reader is powered off and I can't do anythyng.

Do I need something to power it? or maybe in my program code? Any help will be so appreciated. Thank you very much.

P.S: I'm using a Samsung smt-530 galaxy tab 4

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It seems your reader gets it's power through USB and Android devices needs to support usb on-the-go to be able to power other devices through USB. Your tablet apparently doesn't support this.

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Sorry I must unmark your question. The reason is that finally I could connect my RFID tag reader. The problem was the usb wire that I was using. Today I bought a new USB OTG wire and it's working perfectly.

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  • That's good to know, thank you for sharing your solution with the community :) btw, you can mark your own answer as the correct answer so future readers can see which solution worked for you. – Kevin Apr 22 '15 at 10:24

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