(4) Notwithstanding subsection (a)(1), a landlord shall not be considered to be commingling the security deposits with the landlord's assets if there is excess interest in the account in which the security deposits are deposited. "Excess interest" means the amount of money in excess of the total amount of security deposits deposited into the account plus any interest due thereon.
(b) (1) Except as provided for in subsection (b)(2), any landlord who receives a security deposit from a tenant or prospective tenant shall give said tenant or prospective tenant at the time of receiving such security deposit a receipt indicating the amount of such security deposit, the name of the person receiving it and, in the case of the agent, the name of the landlord for whom such security deposit is received, the date on which it is received, and a description of the dwelling unit. The receipt shall be signed by the person receiving the security deposit. Failure to comply with this subsection shall entitle the tenant to immediate return of security deposit.
(2) Upon payment of the security deposit by means of an electronic funds transfer, the landlord shall give the tenant a receipt that complies with subsection (b)(1), or an electronic receipt that acknowledges the receipt of the security deposit. The electronic receipt shall set forth the date of the receipt of the security deposit, the amount of the deposit, a description of the dwelling unit and an electronic or digital signature, as those terms are defined in 5 ILCS 175/5-105, of the person receiving the deposit.