An Idemnitor(co-signer) is the person who is bound, by an idemnity, to be indemnify or protected by the other, and is over 18 years of age and can legally bind the bail bond agreements.
Idemnitor(s) (co-signers) usually are friends, your employer, or family members.
Collateral is pledged in the form of unsecured personal property, real-estate,
a home mortgage, stocks, bonds or cash.
Traditionally, bail is a form of property deposited or pledged to a court to persuade it to release a suspect from jail, on the understanding that the suspect will return for trial or forfeit the bail. When bondsman is used and a surety bond posted, a fee for that bond is charged and the parties are entered into a three party binding contract.