I was testing our app with the T20. The NFC and QR reader did not work with our app. Are this functionalities native to the device or they work with an SDK? Thank you

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I was testing our app with the T20. The NFC and QR reader did not work with our app. Are this functionalities native to the device or they work with an SDK? Thank you

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Hello team, I was able to check the demo for the NFC Mifare classic. The problem with the demo is you need to press a button to open the nfc, then you need to press another to authenticate and finally press another to read. With our app we need to be able to do all this steps without user interaction. Apart from that we need the app to be listening all the time for an incoming nfc tag. That’s why I was asking you last time if there’s something like a listener similar to the one you have with the QR Reader (setHardReaderListener). I would really appreciate if you can help me with this. Thank you.

asked in T20 by jason Q&A Engineer (11.1k points)

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my main issue for now, is managing to handle Ultralight EV1 tag. for that we are used to send raw APDU. I have tried, to use the nfc.transmit method, but I suppose it needs to receive more than just the basic apdu code, and it's more low level than I expect. Basically I'm used to transceive : 0x60 -> GET_VERSION 0x1B... -> PWD_AUTH 0x30... -> FAST_READ ... But here passing those value give me errors. I had no issue using the m1_authenticate m1_read_block m1_write_block If you have some sample code, managing to read/write or send the GET_VERSION apdu to an ultralight code, it should be enough for me to take after.

asked in T20 by jason Q&A Engineer (11.1k points)

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We have a site with high sun... and the QR scan has problems... then we need to pass our hand to make it work... *** maybe is possible always leave the light on?

asked in T20 by jason Q&A Engineer (11.1k points)

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We would like to use the face recognation with Telpo20 device. May you help me , where can I find this feature in the demo, otherwise may you send me a demo with it?

asked in T20 by jason Q&A Engineer (11.1k points)

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0 answers 88 views

Actually, the SDK provided with the device is working on Android Gradle 7.0.3 which is quite old. We tried to upgrade the Gradle to 8.4 version but we faced issue. We would like to get confirmation from you that its possible to upgrade Android and Gradle version and still use your SDK. also can we upgrade the Android firmware in order to use flutter for some app development ?

asked in S10 by jefpro Q&A Freshman (102 points)

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for the QR reader - we are using the telpo_api with RSReader class as in TPS530 devices. But we don't receive any bytes using rsReader.rs_read() the QR reader beeps and recognizes the QR code, but there are no bytes coming from RSReader

asked in T20 by jason Q&A Engineer (11.1k points)

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I want to reload the software for the Kiosk K20. Could you help me with how to connect the USB port of the computer to which port on the K20 to reload the software? Also, what type of cable should be used for the connection? Please provide me with a picture or video of the connection method. Thank you

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In our app we need to track the bus location and we can’t use the gms for fusedLocation. What is your suggestion in this case?

asked in T20 by jason Q&A Engineer (11.1k points)

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Would you tell us commands to change the qr scanning mode in Telpo T-20? We need to turn off the scanner after scanning. now the problem is that the scanner does not turn off after reading and immediately reads the same qr

asked in T20 by jason Q&A Engineer (11.1k points)

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Where can i find the SDK and documentation for the T20 with face cameras?

asked in T20 by HandsFree Q&A Freshman (132 points)

I was testing our app with the T20. The NFC and QR reader did not work with our app. Are this functionalities native to the device or they work with an SDK? Thank you

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