Next year I'll be in Singapore for a month with school, visiting a university as a guest, but will have my hotel in Johor Bahru, Malaysia, and commute by bus CW2 or SJE to central Singapore.
I know there are numerous Malaysian cross-border commuters, who need passports to cross, meaning their passports would get full really soon.
Is there any program to register for that exempts you from having to have your passport stamped four times a day (i.e. 122 stamps in total including the inital entry and final exit from Singapore)?
If there is such a program, is a visa-free foreigner (in both countries) eligible?
UPDATE: Okaaayyy, so I called both immigration authorities today. The Malaysians obviously wanted to know why I booked a hotel in JB, whereby I said that the price difference AFTER adding the transport costs is 2,500 ringgit, which is a lot of money that could definitely go towards food etc. instead, and I'd still have some left over. I also made it clear I used to commute for 1.5-2 hours per direction as a teenager in my home country, and that I'd be happy to send screenshots of the search engine Trivago to show what I mean, but they essentially said it was fair enough.
For the Singaporeans, the instant red flag was the fact that I'm visiting the Duke-NUS Medical school. They said if I'm either a guest for a maximum of 90 days or an actual student for a maximum of 30 days, I don't need a student pass, whereby I said I'm a guest for 31 days. They then asked why the hotel in JB. Said the same thing. They then said they'd be interested in seeing the invitation letter once I get it. I said I'll gladly send it via email if they gave me an address. They finished by saying again that as long as I only do what I mentioned, it's OK.
Regarding the original issue, there seems to be something called MACS (an electronic Malaysian "visa" sticker), and EIACS in Singapore. I'm clearly not eligible for EIACS, but regarding MACS I was advised to contact the application office in Singapore. To save money, I've now emailed them. Those programs apparently exempt you from passport stamps.