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Answered2 days ago

What should I do if I forget to bring copies of my TDAC and other travel documents when arriving in Thailand?

THIM and TDAC notice
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Ronald *********
asked Nov 8, 2026
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Forgot the golden rule, of making hard copies of info.

I arrived at Suvarmabumi airport Thailand with no internet, and the TDAC on my phone.

I managed to get the 1hour airport free internet, but there were hundreds of arrivals.

I was worried my internet would expire, because it showed on the screen to prepare TDAC for inspection.

Luckily I got through with no problem, with all other info on hard copy.
Answer summary
The discussion emphasizes the importance of having hard copies of travel documents, including the TDAC, when arriving in Thailand. Many users share experiences indicating that TDAC information is often accessible directly through the immigration officer's system when your passport is scanned, negating the need for hard copies. However, some recommend having a screenshot or a physical copy as a backup for added assurance, particularly for travelers who prefer to be cautious.
57 repliesnewest first
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Dave ********
Your TDAC is on the IO's computer screen.
Peter ********
On longer trips with tons of flights, hotel- and resort reservations, trains, ferries, insurance, I have one printed page for each of those in a folder with clear plastic pages. This came handy on a few occasions during my last RTW trip. Like, in FRA they were confused about my award reservation on Condor, that I had made with Alaska miles, and could not find it in the computer for quite a while. When I presented them with 3 printed pages, it got a lot easier.
Tod *********
as soon as they scan your passport it shows in their system whether you did or didn't file a TDAC, so no need to have it printed
0
Bradley ********
When you hand them your passport, your TDAC information will pull up for them to verify. You should have a hardcopy or your QR code on your phone, along with your airline ticket, handy, and ready in case asked, but it is rare
0
Asbjørn ********
It's all up to Immigration officer, I always bring TDAC on paper, have had to show it 2 times, have seen people be sent away to get a print before they could enter...
0
Martyn ***********
They know when they scan your passport if you've don't it or not. You could also have completed in the airport... You need to chill a bit.
0
김**
Just came through immigration two hours ago. He didn’t even look at mine. He asked to see my boarding pass. I asked if he needed to see the tdac form and he said it’s already on the computer when they scan the passport.
0
Peter **********
I always take hard copies of everything when going through any airport
0
Jonnie *******
I’ve used the THIM app a few times for entries, I normally have between 6 and 8 entries each year and only ever screenshot with no issues, prior to the THIM app there has been on one occasion I never received the QR code but noted the application number, still no issue on entry since it’s already on the immigration system
0
Ian **********
Screenshot the QR code and save it as a picture. Then you don't need the internet. If you have completed it correctly, it will show on the screen when the IO scans your passport.
0
Malcolm **********
So it sounds like you didn't have the info 'on your phone' but had it on a cloud service that you accessed via your phone. It would have been 'on your phone' if you had either saved it to your phone's storage or even just taken a screenshot and then you wouldn't have needed any internet. Personally if I was going on holiday and needed some documents I wouldn't had risked even having the document saved on by phone as it could easily have failed to work due to a bead battery or damaged during travelling or even been stolen in the airport so I would take a paper copy with me.
0
BraveSea*********
Connect to airport wifi and take a screen shot.
0
Lee *********
Switch on esim?
0
Liza ********
you can save the TDAC QR code as a photo on your phone - then you don't need internet to access it. Also I am pretty sure that Immigration has access to it on line as it is linked to your passport. I have asked if they need to see it and been told no - but for back up - just save it as a photo on your phone - then all you need is battery
0
John ********
You don’t need to show TDAC. It’s already on their system that you’ve done it.
0
Bob **********
Just take a screenshot of the QR code no need for internet
0
Ken ********
It's on there screen as soon as you have finished the application don't stress
0
John ********
John ********
Screen Capture
0
NiftyTu********
NiftyTu********
TDAC is on their system. I have never had to show it.
0
Ian *********
Ian *********
Screen shot might have been a good idea
0
Torben *********
If you filled in the TDAC electronic form, the immigration officer can see this. You do not have to show your own copy on your phone.
0
Paul ********
Paul ********
Its already linked to your passport when they scan .
0
Colin ********
Colin ********
It all comes up on the screen so nothing to worry about
0
Russ **********
Russ **********
Simply take a photo of the qr code…

- don’t to need to be online for showing that
0
Martin *********
Martin *********
Aways be prepared but you could of downloaded it then it doesn't matter if you have Internet
1
Arthur **********
Arthur **********
Lady at Immigration didn't want to look at my TDAC obviously on the screen.
0
Motivate*********
Motivate*********
3day
0
Kate *********
Kate *********
You can renew the 1 hour free Internet
1
Jeff *******
Jeff *******
Arrived earlier this week. They knew I had aTDAC and visa just from my passport
0
Michael ******
Michael ******
They have computer terminals at the entrance for filling out TDAC...
0
Bern ******
Bern ******
I am super cautious about everything. I keep hard copies of visas,etc. I also save screen shots of everything & keep in notes under the country name so that it can be easily pulled up without internet. This has saved me a couple times.
3
Paul *******
Paul *******
THIM APP is perfect.
3
Ronald *********
Ronald *********
OP
Paul Swift

My THIM is still pending 5 days now, that's why I switched to the TDAC no problem email in seconds.
0
Wayne ********
Wayne ********
@Ronald ********
I don’t know if this is your situation however last month my wife and I were traveling here to our home and I applied for my arrival card through thim app about 10 days before my arrival date when the 72 hour window hit, I was notified to do the medical portion of the arrival card filled it out sent it and got the QR code instantly I liked Thim because you can do the majority of the input prior to the 72 hour window
0
Ronald *********
Ronald *********
OP
Graham Seal I completed the TDAC and had an email in minutes, that is what I arrived with.
0
Ronald *********
Ronald *********
OP
Brent Rothsay I know the procedure, completed within 72hts and it's still pending.

I completed the TDAC and had an email in minutes.
0
Brent *********
Brent *********
@Ronald ********
you can only complete 3 days prior to travel
0
Graham ******
Graham ******
@Ronald ********
You can only do the medical declaration within 72 hours of arrival so if it has been pending for 5 days it is too late now, you've arrived
0
Ronald *********
Ronald *********
OP
@Wayne *******
I did the same in advance of the 72 hrs requirement, then completed the medical and it is still on pending 5 days.now.

TDAC instant .
0
Paul *******
Paul *******
I used THIM just a month ago and it was instant, I have used TDAC as well and it's good.
1
Mick *****
Mick *****
999 time out of 1000 they won't even look at it because if you have done it and done it right it pops up on their screen when they swipe your passport. The only time they ask is if it does not come up and that generally means you have not done it or you have done it wrong. I always take a screenshot on my phone in case there is no signal and print it if I can in case my phone has gone flat.
4
Jo **********
Jo **********
I enter Thailand almost twice a month for now for a long time. Never been asked anything about TDAC. It’s in their system. No need for hard copies
6
Martin *******
Martin *******
Ive never been asked for my tdac, presumably it's already in their system.
11
Jo **********
Jo **********
Martin Baker yes I enter Thailand almost twice a month for now for a long time. Never been asked anything about TDAC. It’s in their system. No need for hard copies
1
Myer ******
Myer ******
Screen shots amigo
17
SereneRas**********
SereneRas**********
Myer Gold not needed its linked to your passport Imigration can see it when they scan your passport
0
Martin *******
Martin *******
Myer Gold agreed, I always take screen shots just in case.
3
Myer ******
Myer ******
Martin Baker just simpler more organized ready to go ya know. Good luck
2
Brandon ************
Brandon ************
Yes, always best to have a hard copy. Though for the TDAC I wouldn't really do more than have the QR code on standby. Take a screenshot before you even travel so you don't have to worry about internet at all. Ideally it should not even be needed as it is linked to your passport.
22
Ronald *********
Ronald *********
OP
@Brandon ***********
I arrived previously after completing the TDAC unconcerned and it was never mentioned.

Things seemed to be getting stricter since my last visit.
0
CopperFla*********
CopperFla*********
@Ronald ********
they never ask for your TDAC unless you haven’t done it. When you do it, it gets attached to your passport. When you go through immigration and they scan your passport, they can see it there.
1

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