TagInfo current value for Octopus cards

chfoo — Thu, 01 Oct 2026 15:15:19 GMT

I am using the TagInfo app on Android to scan an Octopus public transport card and I think there may be a bug in how it calculates the current value.

After doing some research, I think it involves the deposit amount changing from $35 to $50 for cards after October 2017. The app shows 0x00000357 in memory, which is 855 - 350 = 505 or $50.5, but the actual value is 855 - 500 = 355 or $35.5.

If this info could be forwarded to the app developers so it can show the updated calculation in a future update, it would be appreciated. Thank you.

Re: TagInfo current value for Octopus cards

Habib_MS — Thu, 01 Oct 2026 18:17:45 GMT

Hello @chfoo,

Thank you for your comments. Unfortunately, this concerns a third-party application and product that are not part of NXP's portfolio, therefore, this is outside the scope of the support we can provide.

I apologize for any inconvenience this may cause.

BR
Habib

TapLinx SDK, TagWriter and TagInfoのトピックRe: TagInfo current value for Octopus cards

TagInfo current value for Octopus cards

Re: TagInfo current value for Octopus cards