An acquirer is a company that offers its affiliated partners the opportunity to accept credit cards and debit cards as methods of payment (also see “acquiring”).

Refers to the card acceptance business at a company that offers its affiliated partners the opportunity to accept credit cards and debit cards as methods of payment (also see “acquirer”).

Affiliated partner
A company (merchant) who offers and sells goods and services and accepts credit or debit cards as payment for them (see “acquirer”).

Environment in which the cardholder is not present and/or the card is not physically present during the transactions.

Combined Data Authentication (CDA)
Refer to “EMV chip”. 

Contactless payment 
With contactless payment, the card is held a few centimetres from a payment terminal with contactless facility. PIN entry is not required for small amounts. The encrypted transaction data is transmitted via wireless technology (see also “near field communication” and “Personal Identification Number”).

Corporate Center
Provides central services for the whole Aduno Group. By focusing consistently on the needs of all divisions, the Corporate Center ensures that systems and processes become more efficient and effective and that synergies between the different divisions are optimally exploited.

Credit card
Card for the payment of goods and services. In contrast to a debit card, the payment transactions are not debited directly against the cardholderʼs account. They are invoiced collectively (see also “debit card”).

Data Analytics
Data analytics refers to the study of large and diverse quantities of data with the help of mathematical and statistical methods to detect interconnections, meanings and patterns in the data. These efforts allow customer needs to be better detected and addressed, for example, and marketing activities and customer processes to be optimised.

Debit card
Payment card linked directly to the bank or post office account. Unlike a credit card, the amount payable is immediately debited against the account if a transaction is paid with the debit card (see also “credit card”).

Dynamic Data Authentication (DDA)
Refer to “EMV chip”. 

3-D Secure 
A security standard jointly developed by Mastercard and Visa for online merchants. Cardholders authenticate themselves during the payment procedure with a personal password.

Electronic commerce (e-commerce)
Refers to all types of electronic business, trade and service transactions that are concluded over the internet (see also “mobile commerce”).

Electronic wallet
See “mobile wallet”.

EMV chip
Technical security standard for communication between chip card and terminal to process debit card or credit card transactions. The chip protects the data stored on the chip from being manipulated and copied. A distinction is made between three technologies: 

SDA (Single Data Authentication): Static value exchanged between chip and terminal.

DDA (Dynamic Data Authentication): The static values are supplemented with a one-time string and are therefore valid only once and cannot be replicated. 

CDA (Dynamic Data Authentication): Analogous DDA but supplemented with a signed certificate.

Interchange fee
A fee paid to credit card issuers (see “issuer”) by merchants for the acceptance of credit cards (see “acquiring”). This fee is charged as a percentage of the transaction amount.

Refers to the issuer of a payment card, e.g. Viseca Card Services SA or a bank that issues payment cards (see “issuing”).

Refers to the card issuing business (see “issuer”).

See “affiliated partner”.

Mobile commerce (m-commerce)
A special sub-category of e-commerce that involves the use of wireless communication and mobile end-user equipment such as smartphones (see “e-commerce” and “smartphone”).

Mobile contactless payment (m-payment)
Payment procedures where at least the payer uses a mobile end-user device such as a smartphone for payment (see “smartphone”).

Mobile wallet (m-wallet)
Electronic wallet or purse. Functions such as payment with a credit card or vouchers and coupons are integrated into a corresponding smartphone app which enables payment via smartphone (see also “mobile contactless payment” and “smartphone”).

Near field communication (NFC)
An international transmission standard for the contactless exchange of data over short distances. This technology is used, for example, for contactless payment and for mobile contactless payment (see “contactless payment” and “mobile contactless payment”).

"one" is a free digital service for even greater convenience and security. It gives control at all times over the payment cards. Once registered, it is for instance easy to check the spendings or the available amount in real time and check and confirm payments in online shops which require 3-D Secure in the "one" app.

Over the air (OTA)
Technology for securely personalising the smartphone SIM with credit card data from a distance (see also “smartphone”).

Personal identification number (PIN)
Secret code used by cardholders to identify themselves during a payment transaction.

Procedure whereby fake e-mails or websites are used to obtain personal data on other peopleʼs computers. The cardholders receive an e-mail requesting them to click on the link in the text, for example, to answer a security question. On these websites, cardholders are then asked to enter personal details such as name, password or PIN code, which the  scammers then use to commit crimes. 

Point of sale
Refers to the place where the customer pays for the desired goods or services. There are physical points of sale, e.g. cash registers in shops, as well as online points of sale (see also “e-commerce”).

See “point of sale”.

Prepaid card
Payment card the cardholder can load with an amount in advance and then use for cashless payments.

Radio frequency identification (RFID)
Radio frequency identification enables the contactless transfer of data. The RFID chip in the credit card identifies the cardholder for contactless and mobile contactless payment. A signature or PIN is no longer needed for small amounts (see “contactless payment”, “mobile payment”, “near field communication” and “personal identification number”).

Rewards programme
Please see “surprize”.

SDA (Single Data Authentication)
Refer to “EMV chip”.

Shareholders of the Aduno Group
All Swiss cantonal banks, Bank Cler AG, Raiffeisen Switzerland Cooperative, Entris Banking AG, BSI SA and Migros Bank AG. You will find detailed information here.

Refers to the copying of the magnetic strip, finding out the PIN and duplicating the card. To do so, the thieves fit the ATM with a skimmer, i.e. a reading device that copies the data contained on the card that is inserted. A video camera records the cardholderʼs PIN so the card can be subsequently duplicated and misused.


Mobile phone with computer functions which can be loaded with additional programmes (apps). Several latest models contain an NFC chip that enables mobile payment (see “mobile payment” and “near field communication”).

Rewards programme in which registered cardholders collect surprize points worldwide for each use of the card. The points can be exchanged online for rewards.

Card-based transaction between cardholder and affiliated partner or cardholder and member bank.

Two-factor authentication
With two-factor authentication (2FA), the customer’s identity is determined on the basis of two independent components (factors). Generally the knowledge factor (e.g. a password) is combined with the ownership factor (e.g. a device) or a biometric factor (e.g. fingerprint). In the case of "one", customer authentication is carried out on the basis of the customer’s personal password and confirmation by means of a smartphone app or a one-time password sent by text message.