Good but needs improvement
Could be an angle to gain more profit, since use of the app to rent lockers likely results in more rental time than using the card (w/card it starts only when you open the door; w/card people tend to rent in advance).
Response from developer
Thanks for the feedback! The BikeLink card, introduced in 2003, is a stored value card (https://en.wikipedia.org/wiki/Stored-value_card), so, by nature, the value on the card is not stored on the internet. If every BikeLink location were independently connected to the internet, then we could report the value on the card to you. Unfortunately, for legacy reasons (Gateways were released in 2017)), most BikeLink locations are not connected to the internet and 40% of facility owners have not yet opted for this service. We recommend you use the app instead of a BikeLink card if you want to see your purse value online. Note that BikeLink does not make a profit on rental fees. The sole purpose of the very low rental fee is to deter monopolization and encourage proper use of the lockers.