Using Minga for event check-ins, hall passes, or tracking tardies is most efficient when you have the right hardware. While mobile device cameras work great, many schools prefer dedicated barcode readers to speed up the process. This guide helps you identify which scanners are compatible with digital screens and explains how to optimize your scanning workflow.
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In this article:
Select the correct scanner: Ensure your hardware can read barcodes from mobile and computer screens.
Identify recommended scanner models: View a list of tested 2D scanners that work reliably with Minga.
Manage scan delays: Understand how the built-in delay prevents duplicate entries.
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Selecting the Correct Scanner
For best results in scanning digital ID cards from mobile or computer screens, you should use a 2D optical scanner.
Step-by-step Guide to Scanner Selection
Step-by-step Guide to Scanner Selection
Verify your scanner type: You can identify a 2D scanner by its use of an optical photo sensor rather than a laser. It essentially "takes a photo" of the barcode or QR code and converts it into text.
Avoid 1D Laser scanners: You should not use 1D laser scanners because phone and computer screens are too reflective. The laser bounces back too much light, which confuses the sensor and results in failed or inconsistent scans.
Choose a form factor:
Desktop/Omnidirectional: These are best if students are arriving at a single point (like a front desk) for check-in.
Handheld Bluetooth: These are ideal for teachers in classrooms or staff scanning students at event entrances.
Pro Tip: You don't need expensive industrial equipment. Basic 2D scanners available for approximately $40 USD are sufficient for most school environments.
Recommended Scanner Models
Depending on where you want to use them, a desktop scanner can be very helpful if you have students arriving at one place for check-in/out. Handheld scanners connected by Bluetooth are very helpful if you have people scanning in at events or in classrooms.
We have tested a few models that we like, but you are not limited to these.
Recommended Model | Best Use Case |
High-traffic stationary check-in desks. | |
General-purpose handheld scanning. | |
Mobile scanning via Bluetooth connection. |
Manage Scan Delays
The Scan Delay Mechanism prevents multiple scans within a short timeframe to address issues with duplicate scanning.
This minimizes duplicate records and streamlines the check-in process. When a student scans their ID, a delay is activated to ensure accurate attendance is recorded and to reduce administrative errors, making multiple check-ins smoother and more efficient.
FAQs
FAQs
Which barcode scanners will scan digital ID cards?
You can scan digital ID cards using 2D optical scanners, which use photo sensors to capture barcodes from reflective screens. 1D laser scanners will not work for this purpose.
Why is my 1D laser scanner not working with Minga?
Your 1D laser scanner is not working because phone and computer screens reflect the laser light back into the sensor, causing inconsistent or failed readings.
How much do 2D scanners typically cost?
You can purchase reliable 2D scanners for approximately $40 USD from major retailers like Amazon. More expensive models are generally not necessary for school use.
Why is there a delay between scans?
The scan delay prevents multiple scans of the same ID within a short timeframe. This minimizes duplicate records and ensures your attendance or event data remains accurate.
Troubleshooting
Troubleshooting
Scanner won't read the screen:
Ensure the screen brightness on the student's phone is turned up. Low brightness can prevent the 2D optical sensor from "seeing" the barcode clearly.
Inconsistent scan results:
Check the distance. Most 2D scanners work best when held 4-8 inches away from the screen rather than pressed directly against it.
Scanner not connecting:
If using a Bluetooth handheld scanner, ensure it is properly paired with your device settings and that the battery is charged.
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