Mobile payment, also referred to as mobile money, mobile money transfer and mobile wallet, is any of various payment processing services operated under financial regulations and performed from or via a mobile device. Instead of paying with cash, cheque, or credit card, a consumer can use a payment app on a mobile device to pay for a wide range of services and digital or hard goods. Although the concept of using non-coin-based currency systems has a long history, it is only in the 21st century that the technology to support such systems has become widely available.
Digital currency is any currency, money, or money-like asset that is primarily managed, stored or exchanged on digital computer systems, especially over the internet. Types of digital currencies include cryptocurrency, virtual currency and central bank digital currency. Digital currency may be recorded on a distributed database on the internet, a centralized electronic computer database owned by a company or bank, within digital files or even on a stored-value card.
A payment system is any system used to settle financial transactions through the transfer of monetary value. This includes the institutions, payment instruments such as payment cards, people, rules, procedures, standards, and technologies that make its exchange possible. A payment system is an operational network which links bank accounts and provides for monetary exchange using bank deposits. Some payment systems also include credit mechanisms, which are essentially a different aspect of payment.
The Single Euro Payments Area (SEPA) is a payment integration initiative of the European Union for simplification of bank transfers denominated in euros. As of 2020, there were 36 members in SEPA, consisting of the 27 member states of the European Union, the four member states of the European Free Trade Association, and the United Kingdom. Some microstates participate in the technical schemes: Andorra, Monaco, San Marino, and Vatican City.
Network for Electronic Transfers, colloquially known as NETS, is a Singaporean electronic payment service provider. Founded in 1986 by a consortium of local banks, it aims to establish the debit network and drive the adoption of electronic payments in Singapore. It is owned by DBS Bank, OCBC Bank and United Overseas Bank (UOB).
A digital wallet, also known as an e-wallet or mobile wallet, is an electronic device, online service, or software program that allows one party to make electronic transactions with another party bartering digital currency units for goods and services. This can include purchasing items either online or at the point of sale in a brick and mortar store, using either mobile payment or using a laptop or other personal computer. Money can be deposited in the digital wallet prior to any transactions or, in other cases, an individual's bank account can be linked to the digital wallet. Users might also have their driver's license, health card, loyalty card(s) and other ID documents stored within the wallet. The credentials can be passed to a merchant's terminal wirelessly via near field communication (NFC).
Contactless payment systems are credit cards and debit cards, key fobs, smart cards, or other devices, including smartphones and other mobile devices, that use radio-frequency identification (RFID) or near-field communication (NFC) for making secure payments. The embedded integrated circuit chip and antenna enable consumers to wave their card, fob, or handheld device over a reader at the point-of-sale terminal. Contactless payments are made in close physical proximity, unlike other types of mobile payments which use broad-area cellular or Wi-Fi networks and do not involve close physical proximity.
The Euro Alliance of Payment Schemes (EAPS) was an international alliance of European bank and interbank networks that had aimed to creating a pan-European debit card system in the Single Euro Payments Area to rival Visa and Mastercard using existing country specific systems. It was launched in 2007 with the support of the European Union but failed and was abandoned sometime after 2013.
iDEAL is an e-commerce payment system used for online banking in the Netherlands. Previously controlled by the Dutch e-commerce organization Currence since 2006, the company became owned by the European Payments Initiative (EPI) from October 2023.
National Payments Corporation of India (NPCI) is an Indian public sector company that operates retail payments and settlement systems in India. The organization is an initiative of the Reserve Bank of India (RBI) and the Indian Banks' Association (IBA) under the provisions of the Payment and Settlement Systems Act, 2007, for creating a robust payment and settlement infrastructure in India.
Giropay is an Internet payment system in Germany, based on online banking. Introduced in February 2006, this payment method allows customers to buy securely on the Internet using direct online transfers from their bank account. The system is similar to the Dutch iDEAL payment system, MyBank payment system, the Interac online service in Canada, pagomiscuentas payment service in Argentina, and Secure Vault Payments in the United States. Giropay was owned by giropay GmbH until December 2020, when it was acquired by paydirekt. The two began a merger in May 2021. On 1 July 2024 paydirekt announced that the Giropay service will be shut down on 31 December 2024. Some payment providers stopped the service on 30 June 2024. It will be replaced by the European payment system Wero, which was launched on 2 July 2024.
Payments as a service (PaaS) is a marketing phrase used to describe software as a service to connect a group of international payment systems. The architecture is represented by a layer – or overlay – that resides on top of these disparate systems and provides for two-way communications between the payment system and the PaaS. Communication is governed by standard APIs created by the PaaS provider.
Vocalink is a payment systems company headquartered in the United Kingdom, created in 2007 from the merger between Voca and LINK. It designs, builds and operates the UK payments infrastructure, which underpins the provision of the Bacs payment system and the UK ATM LINK switching platform covering 65,000 ATMs and the UK Faster Payments systems.
"Fintech", a clipped compound of "financial technology", refers to the application of innovative technologies to products and services in the financial industry. This broad term encompasses a wide array of technological advancements in financial services, including mobile banking, online lending platforms, digital payment systems, robo-advisors, and blockchain-based applications such as cryptocurrencies. Fintech companies include both startups and established technology and financial firms that aim to improve, complement, or replace traditional financial services.
Unified Payments Interface (UPI) is an Indian instant payment system as well as protocol developed by the National Payments Corporation of India (NPCI) in 2016. The interface facilitates inter-bank peer-to-peer (P2P) and person-to-merchant (P2M) transactions. It is used on mobile devices to instantly transfer funds between two bank accounts. The mobile number of the device is required to be registered with the bank. The UPI ID of the recipient can be used to transfer money. It runs as an open source application programming interface (API) on top of the Immediate Payment Service (IMPS), and is regulated by the Reserve Bank of India (RBI). Indian Banks started making their UPI-enabled apps available on Google Play on 25 August 2016.
SIA S.p.A. is an Italian company operating in the area of ICT, providing services to the banking and finance sector in addition to platforms for financial markets and e-payment services.
A central bank digital currency is a digital currency issued by a central bank, rather than by a commercial bank. It is also a liability of the central bank and denominated in the sovereign currency, as is the case with physical banknotes and coins.
PayconiqInternational S.A. is a Luxembourg-based company developing a mobile payment and payment processing platform, active in Luxembourg and Belgium. Since October 2023, it has been controlled by The European Payments Initiative (EPI).
A QR code payment is a mobile payment method where payment is performed by scanning a QR code from a mobile app. This is an alternative to doing electronic funds transfer at point of sale using a payment terminal. This avoids a lot of the infrastructure traditionally associated with electronic payments such as payment cards, payment networks, payment terminal and merchant accounts.
Wero is a European mobile payment system intended to replace Giropay in Germany, Paylib in France, Payconiq in Belgium and Luxembourg and iDEAL in The Netherlands. The service was launched on 2 July 2024 by the European Payments Initiative. The service intends to compete with PayPal and similar services, beginning as a real-time payment system and later with extended online payment function.
Single Euro Payments Area 
