Magnetic developer

Magnetic developer is a fluid which makes the magnetic information written on magnetic tape or the magnetic stripe of a credit card or ATM card visible to the naked eye. Magnetic developer can be found in liquid or aerosol form. When applied to a magnetic stripe, suspended metal particles will be attracted to the magnetically charged regions of the stripe as the liquid evaporates.

Magnetic developer

Magnetic developer is a fluid which makes the magnetic information written on magnetic tape or the magnetic stripe of a credit card or ATM card visible to the naked eye. Magnetic developer can be found in liquid or aerosol form. When applied to a magnetic stripe, suspended metal particles will be attracted to the magnetically charged regions of the stripe as the liquid evaporates.