A tablet-type portable electronic device comprising: a plate-shaped housing; a touch panel and display unit provided to a front surface of the housing; and a reading unit that is integrally configured with the housing and performs reading processing of a card related to payment, wherein the housing is substantially rectangular in a front view of the portable electronic device, wherein the portable electric device includes, as the reading unit: - a contact-type IC reading unit that performs reading processing of a contact-type IC card serving as the card, the contact-type IC reading unit having a contact-type IC sensor that acquires electronic information from an IC chip of the contact-type IC card, and an IC insertion groove provided in the housing for guiding the IC chip of the contact-type IC card to a position of the IC sensor, and - a non-contact-type IC reading unit that performs reading processing of a non-contact-type IC card serving as the card, characterized in that the portable electric device further includes, as the reading unit: - a magnetic reading unit that performs reading processing of a magnetic card serving as the card, the magnetic reading unit including a magnetic sensor that acquires magnetic information from a magnetic recording part of the magnetic card, and a magnetic insertion groove provided in the housing for guiding the magnetic recording part of the magnetic card to a position of the magnetic sensor, wherein the contact-type IC reading unit and the magnetic reading unit are arranged to a side of one vertical lateral surface along a shorter direction of the housing, the IC insertion groove and the magnetic insertion groove being open, in said side of said one vertical lateral surface along said shorter direction of the housing, to an outer side in a longer direction of the housing and being concaved with a bottom to an inner side in the longer direction, and wherein the non-contact-type IC reading unit is arranged to a side of the one vertical lateral surface or another vertical lateral surface along the shorter side of the housing, and can read a non-contact-type IC card arranged at the front surface of the housing. a plate-shaped housing; a touch panel and display unit provided to a front surface of the housing; and a reading unit that is integrally configured with the housing and performs reading processing of a card related to payment, wherein the housing is substantially rectangular in a front view of the portable electronic device, wherein the portable electric device includes, as the reading unit: - a contact-type IC reading unit that performs reading processing of a contact-type IC card serving as the card, the contact-type IC reading unit having a contact-type IC sensor that acquires electronic information from an IC chip of the contact-type IC card, and an IC insertion groove provided in the housing for guiding the IC chip of the contact-type IC card to a position of the IC sensor, and - a non-contact-type IC reading unit that performs reading processing of a non-contact-type IC card serving as the card, - a contact-type IC reading unit that performs reading processing of a contact-type IC card serving as the card, the contact-type IC reading unit having a contact-type IC sensor that acquires electronic information from an IC chip of the contact-type IC card, and an IC insertion groove provided in the housing for guiding the IC chip of the contact-type IC card to a position of the IC sensor, and - a non-contact-type IC reading unit that performs reading processing of a non-contact-type IC card serving as the card, - a magnetic reading unit that performs reading processing of a magnetic card serving as the card, the magnetic reading unit including a magnetic sensor that acquires magnetic information from a magnetic recording part of the magnetic card, and a magnetic insertion groove provided in the housing for guiding the magnetic recording part of the magnetic card to a position of the magnetic sensor,