OCR Scanner Won’t Start – Error: 'Failure, try again in a few minutes'

Launching the OCR scanner results in the following error message 'Failure, try again in a few minutes. If the problem persists contact support@tec-it.com'.

The error message 'Failure, try again in a few minutes' means that the OCR library is trying to download the text detection module from the Web. Ways to fix it:

  • Make sure your internet connection is active.
  • Wait for some time to check if the module can be loaded. Please don’t stop the app while waiting.
  • Clear the data of the Google Play Services App. Here you can find the “How-To” steps (taken from the Google Play Help page):

    • 1. Open the Settings of your Android device.
    • 2. Tap Apps & notifications.
    • 3. Open Google Play Services. If you don't see it in the list, tap See all apps first and then select Google Play Services.
    • 4. Tap Storage 🡒 Clear cache.
    • 5. Open the Google Play Store app.
    • 6. Wait for 5 minutes, then try your download again.
Scanner Keyboard - Enable Xiaomi Permissions

Barcode / OCR Scanner Does Not Work on My Xiaomi Smartphone

Barcode and OCR scanners won't open on my Xiaomi device after MIUI Update 11.0.1+.


The problem is caused by a missing Xiaomi specific permission, which must be granted. Please try the following steps to fix it:

  • Open the Settings of your device (gear icon Icon Settings top right on screen).
  • Go to Apps 🡒 Manage Apps 🡒 App: Scanner Keyboard 🡒 Other permissions.
  • Enable 'Display pop-up windows while running in the background'.

How to Append an ENTER Key After the Scanned Barcode Data

Simulation of an ENTER Key (Carriage Return) as well as other keys can be set up in the app in the so-called Simulation rules by selecting appropriate placeholders.

How to Set up a Simulation Rule:

  1. Open the Scanner Keyboard app.
  2. Tap on Scanner Keyboard preferences.
  3. Scroll down to Keyboard behaviour and tap on it.
  4. Select the required simulation rule (for specific target applications or predefined as standard rule) or create a new simulation rule by tapping on ADD SIMULATION RULE.
  5. Select Prefix and suffix setting, place the cursor after the placeholder ${INPUT} (stands for the scanned bar code data), tap the button PLACEHOLDER and select Enter (or another required placeholder). The prefix and suffix setting should now show the following line:
  6. Tap OK and Save Rule.

For a complete list of available placeholders, please refer to the Scanner Keyboard User Manual.

Scanner Keyboard - Optional Number Row

How to Set up Keyboard Layout with Numeric Row?

I need a keyboard layout with letter and number keys, like a PC keyboard.

The latest version of Scanner Keyboard provides the possibility to add a numeric row to your keyboard. To enable this additional row, please follow these steps:

  1. Open Keyboard preferences.
  2. Select Appearance & Layouts.
  3. Activate Enable number row.
  4. If required, you can also adjust the Keyboard height here.

Bulk License Invalid after Galaxy Tab Android Update (Android 7 to 8).

After the update Barcode Scanner shows an error like MOAS invalid.

On some Galaxy Tabs the internal serial number (“Device ID”) changes after an update (between Android 7 to 8). This makes your license invalid. For bulk licenses we can trouble shoot this problem by reenabling your activation key for the affected devices. Please contact our sales@tec-it.com with the details.