iptiQ is a provider of micro-insurance policies, which allows you to sign up for an insurance policy in place of a rental deposit. You do not provide a cash deposit, but rather pay a regular fee to iptiQ. If damages or other defects are claimed when you move out, the insurer (iptiQ) then covers the costs.
Here you can find more information about iptiQ. Also feel free to contact iptiQ for further questions around the integration.