Other card uses include time and attendance tracking, access control, library cards, employee ID cards and gift cards. HiCo stripes are appropriate for cards that are frequently used, such as a credit card. High-coercivity magnetic stripes require higher amount of magnetic energy to encode, and therefore are harder to erase. Magnetic stripes come in two main varieties: high-coercivity (HiCo) at 4000 Oe and low-coercivity (LoCo) at 300 Oe, but it is not infrequent to have intermediate values at 2750 Oe.
They are also good as standards of comparison when checked against production samples. Precision jitter test cards are ideal for testing readers and encoders. Ideal cards would have no jitter, but real cards do! Cards with high jitter are generally unreadable, because the decoder electronics in the card reader cannot tell a binary “1” bit from a “0” bit. Jitter Bit-to-bit jitter is a change in bit length from one bit to the next on a magnetic stripe. The stronger the signal encoded the easier it is for the magnetic reader to amplify that signal and decode the message. So QA tests are performed every hour at many card manufacturers facilities to ensure signal amplitude, bit space, and jitter are within ISO specifications.Īmplitude is essentially the signal strength. If the encoding is out of placement it will affect the read back of the POS (Point of Sale) systems in the field. When performing magnetic encoding the encoding head alignment (write head) as far as Track placement on the stripe, is critical.
Magnetic Developer is Used to Ensure Proper Mechanical Placement and Encoding on the Magnetic Card Stripe or Tape.
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