Издательство: | Книга по требованию |
Дата выхода: | июль 2011 |
ISBN: | 978-6-1304-5458-6 |
Объём: | 84 страниц |
Масса: | 147 г |
Размеры(В x Ш x Т), см: | 23 x 16 x 1 |
High Quality Content by WIKIPEDIA articles! Proximity card (or Prox Card) is a generic name for contactless integrated circuit devices used for security access or payment systems. It can refer to the older 125 kHz devices or the newer 13.56 MHz contactless RFID cards, most commonly known as contactless smartcards. roximity cards are powered by resonant energy transfer and have a range of 0-3 inches in most instances. The user will usually be able to leave the card inside a wallet or purse. roximity cards use an LC circuit. An IC, capacitor, and coil are connected in parallel.
Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.