Quick answer: In 2026 the large majority of attractions and tours accept a mobile ticket or voucher on your phone — a barcode scanned at the gate, or a booking reference checked by the guide. A minority still require a printed voucher: some ticket exchanges where the operator hands you a physical ticket, certain transfers, some shows and a few older attractions. The listing tells you which, in the “Voucher info” or “What to bring” line, and the confirmation email repeats it. Whatever the format, bring photo ID for named tickets and keep an offline copy.
Related: Viator Mobile Tickets & Vouchers: What to Show at the Meeting Point (2026)
The Four Formats You Will Meet
| Format | What you show | Where common | Backup |
|---|---|---|---|
| Barcode / QR e-ticket | Phone screen scanned at the gate | Museums, towers, theme parks, Tiqets/Klook products | Screenshot; PDF in email |
| Mobile voucher | Booking reference + name checked by guide | Guided tours on Viator/GetYourGuide | Screenshot; know your BR- number |
| Voucher exchange | Voucher (mobile or printed) swapped for a physical ticket at the operator’s point | Vatican, Colosseum, Alhambra tours; some shows | Printed copy if required |
| Printed voucher required | Paper copy | Some transfers, shows, older attractions | Hotel front desk can print |
Top-Rated Sagrada Familia Tours & Tickets on Viator
Where Mobile Tickets Are Standard
Almost all major attractions now scan phones: Sagrada Familia, Louvre, Eiffel Tower, Tower of London, Van Gogh Museum, Empire State Building, theme parks, observation decks. Official tickets arrive as a PDF or in-app barcode; third-party tickets from Tiqets and Klook are usually the venue’s own barcode; guided tours on Viator use a mobile voucher checked against a manifest. Vouchers in the Viator app work offline once loaded (details).
Where Printing Still Matters
Some operators must exchange your voucher for a physical ticket they have pre-purchased — common at the Vatican, Colosseum and Alhambra — and a few insist on a printed voucher for that exchange. Certain airport transfers, ferry crossings, shows and older attractions also ask for paper. The listing says “Printed voucher required” or “Mobile or paper ticket accepted”; if it says printed, print — hotels will do it. Ignoring the line can mean a refused entry.
Named Tickets and ID
Many European attractions issue tickets in the lead traveller’s name and check ID (Alhambra, Sagrada Familia towers, Colosseum, Anne Frank House). Reduced tickets need proof of age or status. The format of the ticket does not change this — a barcode on your phone still needs your passport in your pocket.
Battery, Signal and Other Failures
Load tickets before leaving the hotel; old towns kill signal. Screenshot every barcode and voucher. Carry a small power bank. Note the booking reference on paper — guides can find you on the manifest without the voucher. If a barcode won’t scan (brightness, cracked screen), the gate can usually type the number; have the email open.
Group Bookings
One voucher covers the whole booking; the lead traveller shows it. For barcode e-tickets, each person may need their own barcode on entry — the PDF often contains one per ticket, so send screenshots to everyone in the party in case you get separated at the gate.
Reading the Listing
Look for three lines: “Voucher info” (mobile/paper/printed), “What to bring” (ID, passport, printed confirmation) and “Meeting point” (exchange point vs entrance). Together they tell you exactly what to have in hand. Our meeting-point guide covers the last one.
Destinations: Barcelona, London, New York City.
Frequently Asked Questions
Do I need to print tickets for attractions?
Rarely. Most attractions scan phones. Print only when the listing says “Printed voucher required” — some voucher exchanges, transfers and shows.
Do Viator vouchers work on my phone?
Yes. The voucher in the Viator app or the email PDF is accepted by most operators, and the app voucher works offline once loaded.
What if my phone dies at the gate?
Use a screenshot on a companion’s phone, the PDF, or the booking reference — guides and gates can look you up. Carry a power bank.
Do attractions check ID with mobile tickets?
Yes where tickets are named or reduced — the Alhambra, Sagrada Familia, Colosseum and many others. Bring photo ID.
What is a voucher exchange?
The operator swaps your voucher for a physical ticket at their meeting point before the visit. Arrive early; some exchanges require a printed voucher.
Can several people enter on one phone?
For guided tours, one voucher covers the group. For barcode e-tickets, each person may need their own barcode — share screenshots in advance.
Kratos Review is reader-supported. We may earn a commission when you book through links on this page, at no extra cost to you. Prices and policies were checked on 28 September 2026 and can change.
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