The collateral is usually preferred to be liquid, such as an irrevocable letter of credit, but some sureties will also take other pieces of collateral, such as certain equipment or even real property. A Collateral Bond is different when used in the context of a surety bond.
You may be eligible for an unsecured bond if you committed a minor crime. In addition, a court may be more inclined to offer you the option of an unsecured bond if you have no criminal history. If you accept an unsecured bond, it is in your best interest to comply with its terms.
Unsecured debt has no collateral backing. Lenders issue funds in an unsecured loan based solely on the borrower's creditworthiness and promise to repay. Because secured debt poses less risk to the lender, the interest rates on it are generally lower.