View Issue Details

IDProjectCategoryView StatusLast Update
0007289Talerwallet (Android App)public2022-08-19 15:06
Reportersebasjm Assigned Togrote  
PrioritynormalSeverityminorReproducibilityhave not tried
Status resolvedResolutionfixed 
Product Versiongit (master) 
Target Versiongit (master) 
Summary0007289: can't read qr codes with inverted colors
Descriptionblack background and white squares don't work with the qr scan.

other qr scanners are able to read the qr
TagsNo tags attached.



2022-08-17 20:54

developer   ~0019015

Our scanning library allows us to request an inverted scan:

However, how do we know whether we need to scan an inverted code beforehand?


2022-08-17 20:55

developer   ~0019016

I hit send too fast. There's actually a MIXED_SCAN mode which should help.


2022-08-17 21:16

developer   ~0019017

Implemented in

sebasjm could you check if this works for you now? I inverted a code with GIMP and could scan that.


2022-08-19 15:06

developer   ~0019019

it worked!

Issue History

Date Modified Username Field Change
2022-07-24 16:10 sebasjm New Issue
2022-07-24 16:10 sebasjm Status new => assigned
2022-07-24 16:10 sebasjm Assigned To => grote
2022-08-17 20:54 grote Note Added: 0019015
2022-08-17 20:55 grote Note Added: 0019016
2022-08-17 21:16 grote Note Added: 0019017
2022-08-19 15:06 sebasjm Status assigned => resolved
2022-08-19 15:06 sebasjm Resolution open => fixed
2022-08-19 15:06 sebasjm Note Added: 0019019