Questions tagged [qr-code]
The qr-code tag has no summary.
12 questions
0 votes
2 answers
258 views
Encoding text to image and decoding back to text
(FYI: I asked this question on stack overflow and was directed here) My problem is as follows: I have a dashboard running on a server at customer premises which updates every 15 minutes The dashboard ...
- 23
0 votes
1 answer
388 views
Short and compact barcode
I am writing a c# program where I need to print a lot of small barcodes in a 100x100 grid on a piece of paper. I then scan/photograph the paper and read the barcodes again. Each barcode only need to ...
- 127
34 votes
9 answers
14k views
Is it good practice to echo PHP code into inline JS?
I'm new to PHP and JS and I'm currently working on a gym management web app for our project in school. I'm adding a bit of QR functionality that sees if the user is eligible to enter the gym or not by ...
- 458
0 votes
1 answer
327 views
Barcode that support ~3500 chars [closed]
I can't figure out a barcode that would support ~3500 chars. The barcode should contain 40 strings with caret return, each 76 chars long. Each string will look like this: ...
- 101
1 vote
1 answer
222 views
When do I reset Two Factor Authentication secret keys?
I have built a simple authentication system for my web application that makes use of the open-source time-based OTP algorithm (RFC 6238). The key for each user is generated when the user is registered ...
- 129
7 votes
4 answers
1k views
QR Codes as Booking Confirmations for Conference?
A client of mine is holding a conference and we have the task of creating a booking system for them. However they have requested that we use QR codes so that on the door, a person can simply present ...
- 187