There are many types of readers on the market. It can be difficult to decide which technology you should use. We recommend that you start with the type of media you want to use. The options are swipe card, proximity card, smart card, bar code or biometrics. Keypad were left off this list because they are to easy to circumvent and should only be use for PIN input after proper media has been presented to the reader.
The two most used are the prox card and the swipe card. The swipe card is older technology and mostly used when there are other needs in the organization for the swipe magnetic strip. An example would be colleges where the cards are used for food service, the library and other related functions. Most card systems use the prox reader. The other methods are usually used in high security and government areas where cost and management time are not an issue.
The prox cards contain an antenna with a unique identifier encoded in the card. The reader is a transmitter receiver that sends out energy and cuase to the card to state it’s identification which is then “read” by the reader. The reader then transmits the information to the control panel where it is verified by the hardware and software. This occurs in an instant and the door then opens or the reader indicates failure with a red light and a beep.
One reason folks choose Proximity cards is that they can be printed with pictures and information about the cardholders. We can print cards or provide printers and supplies for you to print your own. There are also key fobs available if you prefer. They have the antenna imbedded in plastic and can be placed on a key ring or purse.
Hid is the leading manufacturer of Proximity readers and they make many styles. The rule of thumb is the larger the reader, the greater the read distance for the card. The 18 ” readers when power at 36 volts can read a regular proximity card up to 3 feet away! We stay away from many of the smaller cheaper readers due to the lower read range and the fact that HID warranties most of their readers for life.

Thinline II HID Proximity Reader.
We generally use the Thinline II reader since it is a the size of a standard outlet or light switch box and has a good read range. They make a mullion style of the reader for storefront door applications.
We will further explain the other types of readers in a future post!