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Answered2 months ago

How can a British passport holder successfully register their passport in THIM?

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Nigel **********
asked Aug 13, 2026
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Hi

Has any British Passport holder managed to register their passport in THIM?

I just get the same message “uncover the page” ( which is obviously plastic coated)

TIA

Update.

Thanks guys. After a lot of perseverance, changing lighting etc

Got it done. ✔️
Answer summary
British passport holders have encountered difficulties when trying to register their passports with the THIM app due to issues related to reflections on the data page. Several users suggest using specific lighting techniques to reduce glare, while others mention successfully entering their information manually when scanning doesn't work. Some users have reported problems with the app recognizing their nationality. Others recommend using the TDAC system instead of THIM for updating health information prior to travel.
27 repliesnewest first
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Steven *******
Steven *******
you do not need to use THIIM , just use the TDAC online at the Thai Govt website .
Nigel **********
Nigel **********
OP
Steven Scott. I travel a lot so it’s much easier. I have 3 trips already planned in THIM and just need to update the health information 72 hours before. For a one of trip I agree TDAC is ok.
Mitchell *******
Mitchell *******
Enter manually.
Brian ********
Brian ********
Yes, i registered my passport with the app Thim
Carol ********
Carol ********
Are we required to fill the THIM FORM as well as tdac?
Phil ********
Phil ********
Use a scanner, not a phone camera.
Paul ********
Paul ********
I gave up completely

Simply won't read the passport

Samsung and Huawei phone both the same
Chris **********
Chris **********
Mine submitted didn’t ask for pictures just number 72 hours before travel have to submit health form
Geoff *******
Geoff *******
Yes, but cannot verify by NFC. The app tried to put my nationality as Scottish but they fixed that.
Gary *******
Gary *******
I did but it had my nationality wrong and thats from scanning passport so fk knows how that works 🤷🏻‍♂️ so I deleted it ..
Nigel *******
Nigel *******
Mine would not scan, but accepted a manual entry of the details.
Michael ********
Michael ********
Yes
Sebastian ********
Sebastian ********
I had no problems loading it into THIM.
Julian *******
Julian *******
i entered mine manually
Stephen ********
Stephen ********
Same
Paul ****
Paul ****
I have it took quite a few attempts in different lighting to stop reflection
David *******
David *******
Yes, likewise

New UK passport and THIM cannot detect the chip despite numerous attempts

I’ve tried with other chip detector programmes and it’s worked fine, just not with THIM.

THIM also insists on listing my nationality as SCOTTISH as I was born in Edinburgh.
David *********
David *********
David Grant detecting you as SCOTTISH is a WIN for sure 🏴󠁧󠁢󠁳󠁣󠁴󠁿 😊
Sebastian ********
Sebastian ********
David Grant I also have it showing Scottish nationality even though I was born in London!
David *******
David *******
Sebastian Barrow you lucky man
Judy *******
Judy *******
It worked for us
Nang ******
Nang ******
I also have the same problem
Dave *******
Dave *******
Yeah took a couple of attempts but yeah all done and sorted 💪💪💪💪
Paul ********************
Paul ********************
Yes.. You need to reduce the reflection on the data page
George ********
George ********
Yes having same problem just wont recognise it
Adam *******
Adam *******
British passport is very reflective.

I turn the main light off and use a separate light source at an acute angle to stop reflections.
Jean ************
Jean ************
My passport from another country can't be read by THIM either. I have just asked an immigration officer. He told me to continue using TDAC.

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