Japan Communications Inc. says it has started allowing foreign visitors to Japan to purchase prepaid data SIM cards online and pick them up at post offices in the nation's major airports with an additional postage fee of ¥210.

The carrier offers two types of prepaid SIM cards, each priced at ¥3,980. One has a speed of up to 300 kilobits per second while the other is faster, suitable for Skype and other Internet voice calls, but has a limited storage capacity of 1 gigabyte.

Both are available in regular and micro sizes and valid for 14 days following shipment.

The pickup service is available at post offices in New Chitose (Sapporo), Narita, Haneda, Chubu (Nagoya), Kansai (Osaka), Hiroshima, Fukuoka, Kagoshima and Naha (Okinawa) airports.

The company provides customer support in English by phone every day except Sunday.