A report hints KL might be switching off its coin-fed parking meters from tomorrow (Oct 1st, 2020) in favour of apps: FlexiParking, EZ Smart Park (no apps listed), Wilayah Parking (website directs to FlexiParking) and M-Cash (an ewallet, requires ID & contacts permissions). Apparently, established ewallets Boost and TnG are in the midst of implementation. No mention of JomParking.

Other Citiies
So happens, a few other cities are also in the midst of a switch:

As an illustration of the cauldron that is EV engineering, designers are mulling giving each EV a unique electronic id and a linked owner. When an EV is charged or filled with hydrogen, the owner's pre or post paid account gets billed. Could be applied to parking too. No wallet required.