# QR Sticker Rubbed Off **URL:** \ **Category:** General\ **Created:** [February 22, 2019, 4:36pm UTC](https://community.particle.io/t/qr-sticker-rubbed-off/47958 "2019-02-22T16:36:01Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Eyeohtee](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/eyeohtee/32/19660_2.png) [@Eyeohtee](https://community.particle.io/u/Eyeohtee)\ **Post date:** [February 22, 2019, 4:36pm UTC](https://community.particle.io/t/qr-sticker-rubbed-off/47958/1 "2019-02-22T16:36:01Z")
I rubbed our Boron’s sticker with my thumb too much while using its buttons and am no longer able to scan the QR code in the Particle app or Android’s QR reader. Do I have to request a replacement sticker from Particle, or does the code resolve to a value I have allowing me to print the QR code? ---
**Author:** ![ScruffR](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/scruffr/32/6952_2.png) [@ScruffR](https://community.particle.io/u/ScruffR)\ **Post date:** [February 22, 2019, 4:46pm UTC](https://community.particle.io/t/qr-sticker-rubbed-off/47958/2 "2019-02-22T16:46:24Z")
With ~~`particle identify`~~ any serial terminal program you can read the device ID, serial number and device secret by sending `i` to the device (in Listening Mode). With these you can recreate the data matrix with this tool > **[Free Online Barcode Generator: Data Matrix](https://barcode.tec-it.com/en/DataMatrix)** > > Free Data Matrix Generator: This free online barcode generator creates all 1D and 2D barcodes. Download the generated barcode as bitmap or vector image. There were some threads for that issue already 😉 > [@Mesh device setup without QR code / data matrix / datamatrix / sticker?](https://community.particle.io/t/mesh-device-setup-without-qr-code/47651/3): > > Hey there! So actually, it is entirely possible to recreate the barcode for any device you have USB access to! The first thing you’ll want to do is update to the latest available release (at the time of this writing, is [0.8.0-rc.27](https://github.com/particle-iot/device-os/releases/tag/v0.8.0-rc.27). You can flash this over USB while your device is in [DFU Mode](https://docs.particle.io/tutorials/device-os/led/argon/#dfu-mode-device-firmware-upgrade-) by using particle flash --usb FILENAME.bin Afterward, be sure to put the device into [listening mode](https://docs.particle.io/tutorials/device-os/led/argon/#listening-mode). Once in listening mode, you will want to go ahead and open a serial connection on your device. (In Wi… > [@Barcode erased another method to form the mesh](https://community.particle.io/t/barcode-erased-another-method-to-form-the-mesh/47889/2): > > You can use particle identify which will give you the device ID and the serial number and with these you can rebuild the data matrix. I’ll search the post where the process is explained. Found the post via the forum search with these search terms: mesh qr code Here are some more hits [https://community.particle.io/search?q=mesh%20qr%20code](https://community.particle.io/search?q=mesh%20qr%20code) ---
**Author:** ![Eyeohtee](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/eyeohtee/32/19660_2.png) [@Eyeohtee](https://community.particle.io/u/Eyeohtee)\ **Post date:** [February 22, 2019, 4:55pm UTC](https://community.particle.io/t/qr-sticker-rubbed-off/47958/3 "2019-02-22T16:55:28Z")
I am only able to obtain the device ID, modem IMEI, SIM ICCID, and system firmware version from `particle identify` in CLI. ---
**Author:** ![Moors7](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/moors7/32/588_2.png) [@Moors7](https://community.particle.io/u/Moors7)\ **Post date:** [February 22, 2019, 5:54pm UTC](https://community.particle.io/t/qr-sticker-rubbed-off/47958/4 "2019-02-22T17:54:29Z")
What version of system OS is running on the device? ---
**Author:** ![will](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/will/32/23374_2.png) [@will](https://community.particle.io/u/will)\ **Post date:** [February 22, 2019, 7:07pm UTC](https://community.particle.io/t/qr-sticker-rubbed-off/47958/5 "2019-02-22T19:07:15Z")
Hey there, Sorry this happened to you – we’re implementing stickers that have more robust resistance to corrosion in upcoming manufacturing runs. In the meantime, our support team can help you out. cc @mstanley @ParticleD ---
**Author:** ![mstanley](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/mstanley/32/20170_2.png) [@mstanley](https://community.particle.io/u/mstanley)\ **Post date:** [February 22, 2019, 7:14pm UTC](https://community.particle.io/t/qr-sticker-rubbed-off/47958/6 "2019-02-22T19:14:04Z")
Hey Eyeohtee, To recreate the mobile data matrix, you will need the device’s serial number and it’s mobile secret. `particle identify` does not provide the mobile secret at this time (perhaps it’s something we can do at a later date!). You will want to open a serial connection with the device itself and go through the steps listed in [Mesh device setup without QR code?](https://community.particle.io/t/mesh-device-setup-without-qr-code/47651/3) to access the mobile secret as well. Using that, along with the serial number, will provide you with the data needed to regenerate the data matrix. If you are continuing to have difficulties with this, do feel free to reach out to support, providing your device ID or serial number and we can assist on our end. ---
**Author:** ![Eyeohtee](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/eyeohtee/32/19660_2.png) [@Eyeohtee](https://community.particle.io/u/Eyeohtee)\ **Post date:** [February 22, 2019, 7:38pm UTC](https://community.particle.io/t/qr-sticker-rubbed-off/47958/7 "2019-02-22T19:38:01Z")
@Moors7 We are running `0.8.0-rc.27` ---
**Author:** ![Eyeohtee](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/eyeohtee/32/19660_2.png) [@Eyeohtee](https://community.particle.io/u/Eyeohtee)\ **Post date:** [February 22, 2019, 8:13pm UTC](https://community.particle.io/t/qr-sticker-rubbed-off/47958/8 "2019-02-22T20:13:42Z")
PuTTY worked out. I am on Windows 10, so the Mac instructions didn’t work. This got us the info we needed: 1. Launch PuTTY Configuration (PuTTY desktop app) 2. In the `Session` category select the `Serial` radio button 3. Edit the `Serial line` field to match the COM port your Particle device is connected through (can be checked in device manager) 4. Click the `Open` button at the bottom of the window 5. Once the terminal window opens just press the `i` key and it returns Device Secret and Serial Number along with Device ID, modem IMEI, and SIM ICCID ---
**Author:** ![ScruffR](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/scruffr/32/6952_2.png) [@ScruffR](https://community.particle.io/u/ScruffR)\ **Post date:** [February 23, 2019, 7:14am UTC](https://community.particle.io/t/qr-sticker-rubbed-off/47958/9 "2019-02-23T07:14:52Z")
> [@mstanley](#): > > particle identify does not provide the mobile secret at this time (perhaps it’s something we can do at a later date!). My bad 😊 - I thought `serial identify` triggers the same output as serial terminal + `i` would (by actually invocing the same function). ---
**Author:** ![mstanley](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/mstanley/32/20170_2.png) [@mstanley](https://community.particle.io/u/mstanley)\ **Post date:** [February 24, 2019, 7:44pm UTC](https://community.particle.io/t/qr-sticker-rubbed-off/47958/10 "2019-02-24T19:44:30Z")
No worries! I’ve been meaning to drum up some internal discussions about supporting the secret on `particle identify`. It still fits our paradigm of needing physical device access, so it may be something we can see about in the future. ---
**Author:** ![davidcool](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/davidcool/32/21138_2.png) [@davidcool](https://community.particle.io/u/davidcool)\ **Post date:** [May 27, 2023, 5:03pm UTC](https://community.particle.io/t/qr-sticker-rubbed-off/47958/11 "2023-05-27T17:03:33Z")
For anyone that needs to do this, I had to use this in MacOS to get the USB devices: ```auto ls /dev/tty.* screen /dev/yourusbdevice 9600 i ``` Then it returned the correct information.