| Subject | English | Icelandic |
| comp., MS | employer identification number | kennitala vinnuveitanda (In the United States, a 9-digit number that identifies a business entity to the government. A business must have an EIN if it has employees or meets other criteria specified by the federal government) |
| comp., MS | federal tax identification number | kennitala vegna skatta (In the United States, a 9-digit number that identifies a business entity to the government. A business must have an EIN if it has employees or meets other criteria specified by the federal government) |
| comp., MS | global trade identification number | alþjóðlegt vörukenni (A 14-digit data structure used to uniquely identify trade items, products, and services at a unit level) |
| comp., MS | Global Universal Identification | altæk auðkenning (A 16-byte value generated from the unique identifier on a device, the current date and time, and a sequence number. It is used to identify a particular device, component, user, or session) |
| math. | over-identification | yfir-auðkenni |
| comp., MS | personal identification number | PIN-númer (A unique and secret identification code similar to a password that is assigned to an authorized user and used to gain access to personal information or assets via an electronic device) |
| comp., MS | radio frequency identification | rafmerki (A technology that uses radio frequencies to identify products. An RFID-capable product has an RFID tag that can transmit information, such as serial number, to an RF reader, which converts the information into digital data that can be sent to a computer) |
| comp., MS | radio frequency identification sensor | RFID-nemi (A type of sensor (such as a proximity sensor) that uses radio frequency identification (RFID) for a numerous purposes, such as identification of physical items, automatic log on, location of people, etc) |
| comp., MS | taxpayer identification number | kennitala skattgreiðanda (A 9-digit number used to identify an entity (company or person) for tax reporting purposes in the U.S. There are several different types of tax identification numbers, such as employer identification number (EIN), Social Security number (SSN), individual taxpayer identification number (ITIN), and adopted taxpayer identification number (ATIN)) |