Read history QR codes

A Logmore QR code is capable of holding a lot of data, but long, data-intensive use cases may fill a QR code more often than it is scanned.

The data is not lost when a QR code is filled, but instead the old, "full" QR codes can be found from the historical QR codes saved on the QR logger.

Accessing historical QR codes

You can browse the historical QR codes by entering the history mode. In the normal operation view of the QR logger, click the

twice to access the old QR codes.


The QR logger keeps logging even outside the "normal operation view". You can browse the historical QRs without worrying about losing data.

You can recognize the normal operation view from the QR code and the current temperature shown on the logger screen. History screens have the text "History #X" where the temperature value would be shown.

Browsing the history view

When you have accessed the history view, simply clicking the

once shows the next history page.

A long press (over 2 seconds) on any history screen returns you to the normal operation view. The logger resumes normal operation view after 3 minutes of inactivity in the history view.

History end screen

Once you've browsed through all the historical QR codes on your QR logger, you'll run into the history end screen.

Any click or press of the

returns you to the normal operation view, where you can repeat the process described on this page to access the history QR codes again as needed.