Mobile-first acceptance

Mobile payment systems — wallet, in-app and SoftPOS, on one orchestration API.

Apple Pay and Google Pay on the pay-sheet. iOS and Android SDKs inside the merchant's app. SoftPOS turning phones into terminals. Mobile-adaptive web checkout. One vault, one ledger, one merchant record across every mobile surface and web alongside.

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Apple · Google
Pay surfaced through one SDK
SoftPOS
Tap-to-Phone via licensed partners
Tokens
VTS / MDES network tokens by default
1 ledger
across mobile and web channels

Four mobile surfaces

Where contactless mobile payment systems plug into the merchant

Four surfaces cover the vast majority of mobile-originated traffic. Each rides the same unified API and produces the same vault-token shape on the back.

  1. 01

    Wallet pay-sheets

    Apple Pay, Google Pay, Click to Pay and regional wallets surface on the merchant's mobile site or app. The device returns a scheme-tokenised credential; the platform never sees the raw PAN.

  2. 02

    Native in-app SDK

    iOS and Android SDKs render hosted-field card entry or the wallet pay-sheet inside the merchant's native app. Authorisation routes through the same multi-acquirer engine as web.

  3. 03

    SoftPOS / Tap-to-Phone

    An NFC-equipped phone or tablet accepts a card tap via a licensed partner SoftPOS app. Card-present authorisation flows through partner acquirers; vault tokens carry across to the online side.

  4. 04

    Mobile web checkout

    Hosted checkout adapts to the mobile viewport with one-tap wallets above inline card entry. PSD2-friendly: selective 3DS2 keeps approval high on mobile-originated traffic.

How a mobile authorisation runs

From tap to ledger in five steps

What happens between the buyer triggering a payment on their phone and the row in the merchant's reconciliation feed.

  1. 01

    Buyer triggers payment

    On mobile web a wallet pay-sheet pops up; in the native app the SDK renders the pay-sheet or hosted-field card entry; at the counter, SoftPOS arms for tap.

  2. 02

    Device returns a token

    The device returns a scheme-tokenised credential (Apple Pay's DPAN, Google Pay's tokenised PAN). The merchant origin never sees the raw card number.

  3. 03

    Routing across acquirers

    The platform scores per BIN, scheme, currency, country pair and risk; the top-ranked connected acquirer receives the authorisation.

  4. 04

    Selective authentication

    EMV 3DS2 challenges fire on suspect authorisations; frictionless flows pass through; SoftPOS clears under its own CVM rules.

  5. 05

    Settlement & one ledger

    Settlement files from connected partners normalise into one ledger; daily exports tagged by channel (mobile web · in-app · SoftPOS), acquirer, scheme and currency.

Security posture

Security issues in mobile payment systems — and how the platform addresses them

Five recurring mobile-payment threats and the controls the platform layers on top. The merchant inherits these rather than implementing them separately.

Lost or stolen device
Wallets sit behind the device's own biometric (Touch ID / Face ID / fingerprint) plus a device-bound DPAN; even with the device unlocked, no static PAN is ever present.
Network / Wi-Fi interception (MITM)
TLS 1.2+ end-to-end; certificate pinning in the SDK; vault tokens replace the credential on the merchant origin so an intercepted payload contains no usable PAN.
Malicious app / fake checkout
Apple Pay and Google Pay require an authenticated merchant identifier; in-app SDK signs every authorisation; webhook signatures fail closed if the relay is spoofed.
Account takeover / credential stuffing
Selective EMV 3DS2 challenges fire on suspect authorisations; device-fingerprinting signals feed into the routing engine; velocity rules cap per-device and per-instrument spend.
SoftPOS device tampering
Partner SoftPOS apps follow PCI MPoC (Mobile Payments on COTS): runtime attestation, OS-integrity checks and per-session keys keep tampering out of the auth path.

Main use cases

Where contactless mobile payment solutions earn their keep

Five recurring merchant shapes that benefit from a single mobile + web stack — DTC native apps, travel, local services, pop-ups, and mobile-first SaaS.

  • DTC

    DTC native apps

    Sneaker drops, fashion, fast-moving consumer brands running iOS / Android with Apple Pay above the fold for one-tap conversion.

  • Travel

    Travel and ticketing on mobile

    Mobile-first booking with delayed capture against the same wallet token; refunds reverse the original authorisation through the same partner acquirer.

  • Loc

    Local services with field staff

    Plumbers, courier services, mobile groomers taking SoftPOS taps at the customer's door — the same merchant record powers the online surface.

  • Pop

    Pop-ups and events

    Festival booths, market stalls and event check-ins running SoftPOS on staff phones and tablets — no terminal hardware to ship.

  • SaaS

    Mobile-first SaaS onboarding

    Wallet pay-sheets on the mobile sign-up flow lift activation conversion; recurring tokens carry forward to the renewal cycle.

Platform features

Capabilities behind the unified mobile + web stack

Twelve capabilities split into mobile-surface-side and platform-side. Each applies whether the buyer came through a wallet pay-sheet, the in-app SDK, SoftPOS or the mobile web checkout.

Mobile surfaces

  • Apple Pay & Google Pay

    Surfaced on mobile web and inside native apps; merchant identifier authenticated with the scheme.

  • Click to Pay

    One-tap card credential for enrolled cardholders; surfaced alongside inline card entry.

  • Native iOS / Android SDKs

    Hosted-field card entry inside the native app; vault tokenisation runs in the SDK, not on the merchant side.

  • SoftPOS / Tap-to-Phone

    Licensed partner SoftPOS app turns an NFC-equipped phone into a contactless terminal.

  • Mobile-adaptive checkout

    Hosted checkout responds to the mobile viewport with one-tap wallets above inline card.

  • QR-flow handoffs

    Where merchants need cross-device QR-pay flows (e.g. desktop-to-phone scan-to-pay), the platform issues the payload and reconciles back.

Platform behind

  • Unified API for mobile + web

    Same REST contract powers wallet pay-sheets, in-app SDK, SoftPOS and online checkout.

  • Network tokens (VTS, MDES)

    Issued at first authorisation; vault holds the token, not the PAN; recurring and refund run on the token.

  • Smart routing & cascade

    Per-transaction scoring across the connected acquirer panel; soft declines cascade inside the same authorisation.

  • Selective 3DS2 / SCA

    EMV 3DS2 fires per PSD2 exemption logic; frictionless flows pass; step-up where issuer or amount require it.

  • PCI L1 vault & MPoC

    Vault is PCI DSS Level 1; SoftPOS rides PCI MPoC via the partner; sub-merchants inherit both postures.

  • One reconciliation feed

    Mobile web, in-app and SoftPOS settlements normalise into one ledger with daily exports.

Industry relevance

mobile payment systems canada and the wider geographic footprint

topropay's mobile-side posture targets licensed merchants across EU, UK, APAC, LATAM and Canada — DTC and retail with mobile-first checkout, travel and ticketing with mobile-originated bookings, marketplaces with in-app SDKs, and service businesses taking SoftPOS at the customer's door. Canadian connectivity covers Visa, Mastercard, Amex, Discover and Interac through licensed partner acquirers.

  • EU · mobile wallets + SCA
  • UK · Open Banking + wallets
  • Canada · Interac + wallets via partners
  • APAC · GrabPay, Alipay+, WeChat Pay
  • LATAM · PIX + wallets via partners
  • Licensed gaming (where licensed)
  • Adult content · out of scope
  • Unlicensed gambling · out of scope

Trust & compliance

Compliance posture across every mobile surface

One audited environment underpins the orchestration; PCI MPoC and EMV rules inherited from the partner SoftPOS estate; wallet-side posture inherited from the scheme tokens.

PCI DSS Level 1
Vault, switch and tokenisation are PCI DSS Level 1 service-provider components; sub-merchants inherit the posture across every mobile surface.
PCI MPoC for SoftPOS
Tap-to-Phone deliveries sit with partners whose SoftPOS apps follow the PCI MPoC programme; topropay handles the back-end orchestration.
Wallet network tokens
Apple Pay DPANs and Google Pay tokenised credentials never expose the underlying card to the merchant origin; vault holds the token.
SCA & PSD2
Selective EMV 3DS2 on the mobile authorisation path keeps approval high in Europe without skipping the SCA bar.
Sanctions & AML alignment
Sanctions screening at onboarding; AML monitoring tuned per merchant vertical, volume and channel mix.
Licensed verticals only
Licensed gaming, regulated financial services and other compliance-bound verticals supported only where current operating licences exist. Grey and black-market verticals are out of scope regardless of channel.

Ready to unify mobile + web

Bring every mobile surface onto one orchestration API.

A 30-minute mobile-side review covers wallets, in-app SDK, SoftPOS and the connected acquirer panel relevant to your geographies — followed by a sandbox you can test against before any commercial commitment.

Book a mobile-side review Read the API docs

Frequently asked

Buyer questions about mobile payment systems on topropay

Definitions, Canada-coverage questions, contactless mechanics, security posture, and the practicalities of running mobile and web through one platform.

  1. 01

    What does topropay mean by mobile payment systems?

    Mobile payment systems on topropay covers four surfaces: wallet pay-sheets on mobile web and inside native apps (Apple Pay, Google Pay, Click to Pay), the native iOS / Android in-app SDK, SoftPOS / Tap-to-Phone for in-person card-present acceptance, and the mobile-adaptive hosted checkout. All four ride the same unified API and produce the same vault token shape on the back.

  2. 02

    How does a contactless mobile payment solution work in practice?

    A contactless mobile payment solution on topropay works by combining the device's secure element (Apple Pay / Google Pay) or partner SoftPOS app (Tap-to-Phone) with topropay's orchestration layer behind. The device returns a scheme-tokenised credential; routing across connected acquirers happens server-side; the merchant sees a vault-token-shaped result whether the buyer used a card, a wallet or a tap-to-phone reader.

  3. 03

    Are these mobile payment systems available in Canada?

    Yes — mobile payment systems canada coverage on topropay includes Visa, Mastercard, Amex, Discover and Interac (via licensed CA partner acquirers), with Apple Pay and Google Pay surfaced through the same SDK as the rest of the world. SoftPOS availability depends on partner coverage in the merchant's province; the routing engine picks the optimal Canadian lane per BIN.

  4. 04

    How do contactless mobile payment systems differ from contact-based ones?

    Contactless mobile payment systems rely on NFC and a scheme-tokenised credential — the device exchanges a single-use cryptogram with the terminal or pay-sheet endpoint. Contact-based systems (chip-and-PIN, magnetic-stripe) follow the older EMV contact and ISO 8583 paths; they're still supported on partner terminals where the merchant accepts card-present payments alongside the mobile channels.

  5. 05

    What security issues in mobile payment systems should merchants be aware of?

    The recurring security issues in mobile payment systems are: device theft (mitigated by biometric unlock + DPAN), network interception (TLS 1.2+ and certificate pinning), malicious / spoofed apps (signed authorisations and verified merchant identifiers), account takeover and credential stuffing (selective 3DS2 plus velocity rules), and SoftPOS device tampering (PCI MPoC runtime attestation). topropay's posture addresses each of these inside the platform — the merchant inherits the controls rather than implementing them separately.

  6. 06

    Does topropay store the buyer's card on the device?

    topropay doesn't store cards on the buyer's device. Apple Pay and Google Pay manage their own device-bound tokens (DPANs / tokenised PANs) through Apple's and Google's secure-element infrastructure. The platform's vault stores its own platform token, which references the network token underneath; nothing sits in plain text anywhere in the flow.

  7. 07

    How do mobile transactions reconcile alongside web?

    Mobile transactions reconcile in the same ledger as web. Each reconciliation row is tagged with the originating channel (mobile web · in-app · SoftPOS · web), the acquirer that cleared it, the scheme, the currency and the routing policy. Finance reads one normalised feed rather than per-channel exports.

  8. 08

    Can the same mobile SDK handle subscriptions?

    Yes — the recurring engine runs on the same vault token shape regardless of origin. A subscription that started with an Apple Pay tap on the mobile sign-up flow can renew against the underlying network token through the platform's recurring scheduler, with account-updater coverage when the card re-issues.

  9. 09

    What about merchants that only need the in-person SoftPOS side?

    Merchants that only need the in-person SoftPOS side onboard the same way — a single merchant record, partner SoftPOS app on the owner's phone, no online channels enabled. The platform's online side can be turned on later without a re-integration; the SoftPOS vault tokens carry forward.

  10. 10

    How does the routing engine treat mobile-originated vs web traffic?

    The routing engine treats mobile-originated and web traffic equivalently at the message level — BIN, scheme, currency, country pair and risk signals all feed in. The channel itself is a signal in the policy editor: merchants can pin mobile-wallet authorisations to specific acquirers (where the acquirer offers preferential treatment for wallet tokens) or let the default scoring decide.

  11. 11

    Are mobile wallets supported on every merchant by default?

    Mobile wallets are enableable per merchant during onboarding; Apple's and Google's merchant-identifier registration steps need to complete before live traffic. Most merchants are live with wallets within a few business days; the platform's dashboard surfaces the registration status step-by-step.

  12. 12

    What happens to refunds on a mobile-originated payment?

    Refunds on a mobile-originated payment reverse the original authorisation through the same connected acquirer that cleared it. The customer doesn't need to re-tap or re-present the card; the refund tags back to the original vault token. Operator-side controls require a reason code on every refund.

  13. 13

    Is there a separate dashboard for mobile vs web?

    No — the same merchant dashboard covers all channels. The channel filter lets the operator view authorisations, settlements, refunds and disputes by mobile web, in-app, SoftPOS or web; reporting can be split or combined per the merchant's preference.

  14. 14

    What's the typical timeline to go live with mobile acceptance?

    Most merchants go live with mobile acceptance in 2–4 weeks: KYB and underwriting plus Apple's and Google's merchant-identifier registration on the wallet side; SoftPOS partner registration on the SoftPOS side. Online + mobile can launch simultaneously since they share the same merchant record and integration.

  15. 15

    Does the platform work for cross-border mobile traffic?

    Yes — cross-border mobile traffic routes across the connected acquirer panel by country pair. The merchant sees the same vault token shape regardless of where the buyer came from; the platform's currency-conversion behaviour and per-region method enabling are dashboard-configurable.

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