The key is that the pass should provide for unlimited travel. Monthly (or longer duration) passes are normally eligible. For shorter duration passes, to qualify, the passes must entitle you to unlimited travel for an uninterrupted period of at least 5 days and for at least 20 days in any 28-day period.
Electronic payment cards are eligible if the card entitles you at least 32 one-way trips during an uninterrupted period of not exceeding 31 days and the card is issued by a public transit authority that records and provides a receipt for the cost and usage of the card.
Ride/trip passes are not eligible for public transit credit because they do not provide for unlimited travel.