Complete re-write/re-do of scanner coming up. Should allow for both barcode scanning and taking a picture of the front of the book and should work on all phones reliably.
Let's see...! Aiming to sort this out within the next couple of weeks.

Also on iPhone and have this issue. It takes 4-5 attempts to scan the barcode (with me moving around to try to get both the lighting and focus to work at the same time) and most of the time scans the incorrect ISBN (not sure where the numbers are pulled from since it doesn’t match anything on the barcode). I tested it out yesterday by scanning a book then realizing the ISBN was incorrect. I typed the correct number in and it directed me to the book. Not sure what would be causing that.

I'm on Android and can't access the barcode scanner at all since the last update. The search icon and the barcode icon overlap, so when I try to open the barcode scanner it only tells me to enter text in the search bar.

For my phone (Android S21+), it's that the camera focuses on whatever is in the background, and the foreground is blurry. So what I see is that it is very clear and focusing on the desk or table behind the book, and not the upper half of the screen where the actual barcode is. I am unable to tap or manually select a place for it to focus on the barcode.

I'm on an iPhone in case that matters.

I am able to scan the barcode with no issues. But it almost exclusively leads to the "add a book" page. But when I search for the book via title/author, I am able to find it.

Reverted the recent changes as they weren't working well in general! Sorry everyone! Still working on it.

Can everyone force quit and give the scanner a try and see how it goes? (iOS repeatedly asking for permissions is still not fixed it seems.)

Not working on my Google Pixel phone

On my galaxy s22 I have to hold it at an exact distance when I click the scan button otherwise it just never focuses enough to scan.

Seemingly broken with iOS 18.

Might not be the same bug, but I've noticed when on a book it has two bar codes, one of them for ISBN and the other for something else, it occassionally reads both or the non-ISBN, and it then searches for a number different than the ISBN display on the back of the book.

Although, I've noticed employees at Best Buy have to block one of the barcodes during returns with electronics, so maybe it's just a general issue with scanners. So maybe a way to isolate the bar codes (detect all in the frame), and then let the user select the correct barcode. Might be difficult to implement, though.

I noticed when using it is the scanner doesn't give you enough time to position the barcode in the middle of the frame before snapping the picture and giving the result - sometimes this means it's missed part of the barcode or misread it. So not just about focusing but it's too quick to scan. I'm on an iPhone 15

Just to provide more information, on my Android 12 the barcode scanner has not been focusing at all for weeks. I haven't been able to scan anything except for one fluke I haven't been able to replicate.

It would be nice to have the possibility to switch the flashlight on, which is not possible right now on my iphone. I expect that the scanning works better with the light on.

I'm experiencing the same issue on Android 12 (tablet) and 13 (Motorola Edge 30 Ultra).
Out of all the barcodes I tried to scan, I think I only got one result, maybe two, but both wrong. No barcode was identified for all the other books.
I was wondering if the scan reader only recognises UK/US barcodes. I tried to scan books from Italy and a few more European countries, in other languages than English.

For some cameras/barcode-style combinations it seems to have a higher rate of false positives. I'll be addressing this in the coming months.

I'm on Android 14 and I have the same issue! I've already tried deleting and reinstalling the app in case I was missing a newer version, but no luck so far