Tap to Pay in Switzerland: card payments with your smartphone for food trucks and market stalls

Tap to Pay (also known as SoftPOS) turns a standard smartphone into a contactless card terminal. Swiss food truck operators and market vendors can use it to accept credit and debit cards, TWINT, as well as mobile wallets like Apple Pay or Google Pay directly on their phones – without any additional hardware. All you need is an NFC-enabled Android or iOS device and the app of a supported payment service provider.

This guide shows you step-by-step how Tap to Pay works, which smartphones and providers are supported in Switzerland, how much the solution costs, and when a traditional mobile terminal is still the better choice.

1. What is Tap to Pay and why is it made for food trucks and market stalls?

Tap to Pay – also known as SoftPOS (Software Point of Sale) in the industry – refers to a technology that uses the NFC antenna of a smartphone to accept contactless payments. In this setup, the smartphone completely replaces the traditional card terminal. The payer holds their card or their own phone against the merchant's device, and the transaction is processed via a certified app and a payment service provider (PSP).

For food trucks, market stalls, and pop-up shops, Tap to Pay solves several practical problems at once: there are no acquisition costs for a terminal, the smartphone is always with you anyway, and setup usually takes less than an hour. Seasonal businesses active for only a few months a year particularly benefit because there are no fixed costs or minimum contract terms. Tap to Pay also serves as a reliable backup solution – for instance, if your traditional terminal fails.

In Switzerland, the technology has been widely available since spring 2025. Apple unlocked Tap to Pay on iPhone in Switzerland in March 2025, while Android devices have supported the function for longer via apps from various providers. Swiss PSPs offering Tap to Pay include Payrexx, SumUp, Worldline, Stripe, and Nexi.

2. How it works: smartphone instead of card reader – step-by-step

The process is virtually identical for most providers and is completed in just a few steps:

Create and verify account: You register with your chosen payment provider, submit your company details, and complete the regulatory verification (Know Your Customer, KYC). For most providers, verification takes one to five business days – some, like Payrexx, offer same-day verification if documents are submitted by 4:00 PM.

Download the app: You install the provider's Tap to Pay app from the Google Play Store (Android) or the Apple App Store (iPhone) and log in to your account.

Initiate payment: You enter the amount in the app, select the payment method (card or e.g. TWINT) and activate the payment process.

Customer pays: Your customer holds their contactless card or smartphone (with Apple Pay, Google Pay, etc.) against the back of your device. For amounts over CHF 80, the PIN entry is displayed directly on the smartphone screen.

Confirmation and receipt: The transaction is confirmed. Depending on the provider, you can send the receipt via SMS, email, or QR code.

Payouts to your bank account are processed within 48 hours to five business days, depending on the provider.

3. Requirements: Which smartphones, operating systems, and apps are supported?

Tap to Pay requires a smartphone with NFC (Near Field Communication) capabilities. The exact requirements differ between iPhone and Android.

iPhone

For Tap to Pay on iPhone, you need at least an iPhone XS (2018) or newer. The device must have the current iOS version installed and have an internet connection. In Switzerland, providers such as SumUp, Worldline, Stripe, Adyen, Mollie, myPOS, and Nexi currently support the Apple feature.

Android

Android devices require an NFC-enabled smartphone or tablet with at least Android 11. Google Play Services must be installed and up to date. Devices with root access or enabled developer options are usually blocked for security reasons. Most current models from Samsung, Google Pixel, OnePlus, and Huawei are compatible.

Security and certification: Is Tap to Pay on a smartphone secure enough?

Yes. Tap to Pay is subject to the same security standards as a traditional card terminal. The technology is certified according to the CPoC (Contactless Payments on Commercial Off-the-Shelf Devices) standard of the PCI Security Standards Council (PCI SSC) and complies with the PCI DSS (Payment Card Industry Data Security Standard) guidelines.

On iPhones, card data is processed within the Secure Element – a dedicated security chip that is physically isolated from the rest of the operating system. Apple does not store card numbers on the device or on its own servers. On Android devices, encryption and tokenisation ensure that sensitive card data is never stored or transmitted in plain text on the device. A temporary token is used instead of the actual card number.

Additionally, the same security mechanisms apply as for contactless payments on conventional terminals: amounts over CHF 80 require a PIN entry (which is entered directly on the smartphone screen), and the payment networks (Visa, Mastercard) monitor transactions in real time for irregularities.

5. Service speed: Checkout in under 5 seconds – hands-on test

In the daily routine of a food truck, every second counts, especially during the lunch rush. Tap to Pay performs well here: in hands-on tests, the actual payment process (from the moment the customer taps their card) takes between two and four seconds for contactless payments under CHF 80. For amounts over CHF 80, the PIN entry adds to this, extending the process to about eight to twelve seconds.

By comparison, a classic mobile terminal like the SumUp Solo or a Worldline device takes a similar amount of time for a contactless payment – the difference is in the range of one to two seconds and is barely noticeable in practice. The real time advantage of Tap to Pay lies elsewhere: you don't have to charge, switch on, or connect a separate device via Bluetooth. You enter the amount, the customer pays, and you're done.

A relevant note for everyday food truck operations: a stable mobile data connection (4G/5G) is a prerequisite for the payment process. In areas with poor reception – such as festival sites in rural areas – delays may occur. Some providers allow limited offline transactions that are synchronised later, but this is the exception.

6. Tap to Pay vs. mobile terminal: When is the smartphone sufficient, and when do you need more?

Tap to Pay is not the right solution for every use case. The choice between a smartphone solution and a mobile terminal depends on the business model, the transaction volume, and the accepted payment methods.

Comparison: Tap to Pay vs. mobile terminal

Tap to Pay is particularly suitable if you are just starting out, operate only seasonally, or need an additional device for peak hours. If your daily turnover exceeds CHF 1,000, you need to print receipts, or you regularly want to accept cards without NFC (such as older chip-only Maestro cards), a mobile terminal is the more robust choice. Many merchants combine both: terminal as the primary system, smartphone as backup.

7. Costs: No hardware, just transaction fees – what you actually pay

The biggest cost advantage of Tap to Pay compared to a classic terminal is the elimination of hardware costs. You do not pay for acquisition, rent, or a maintenance contract. Costs are limited to transaction fees incurred per accepted payment and – depending on the provider – a monthly subscription.

Cost comparison of selected providers (Switzerland, as of 2026)

* Stripe fees apply to in-person payments in Switzerland (Domestic). All details without guarantee, as of 2026.

A practical calculation example illustrates the cost structure: a food truck generates CHF 800 in card sales on a market day, spread over 50 transactions with an average amount of CHF 16. With a provider charging 1.65 % + CHF 0.15 per transaction (such as Payrexx), this results in total costs of around CHF 20.70 for that day. With SumUp charging 1.5 % (debit), it would be CHF 12 – but without TWINT acceptance, which is a major sales driver in Switzerland.

For Swiss SMEs wanting to accept TWINT and PostFinance directly via smartphone in addition to cards, Payrexx Tap to Pay is one of the few solutions that unites all relevant Swiss payment methods in a single app. Registration is possible with the free Free plan, and verification is completed on the same day if documentation is complete. Furthermore, Payrexx Tap to Pay can be used on multiple devices with a single account – handy if you run two checkouts at your market stall (first device free, each additional one CHF 4/month).

8. Checklist: Setting up Tap to Pay for your food truck or market stall

• Check if your smartphone supports NFC (iPhone XS or newer, or Android with NFC and at least Android 11).

• Update your operating system to the latest version (iOS or Android).

• Choose a payment provider that supports Tap to Pay in Switzerland and covers the payment methods your customers use (especially TWINT and debit cards).

• Create an account with the selected provider and submit your business details for the KYC check (commercial register excerpt, ID card, IBAN).

• Download the Tap to Pay app from the official app store and connect it to your account.

• Test the payment process with your own card or a test purchase before you go live.

• Make sure you have a stable mobile connection (4G/5G) at the location – test reception beforehand.

• Decide how you will issue receipts (digitally via SMS, email, or QR code).

• Determine if you need a backup (second smartphone, mobile terminal, cash).

• Find out about your provider's payout schedules (daily, weekly, monthly) and make sure your payout IBAN is stored correctly.