My biometric passport inadvertently spent some time under the rain. It's not badly damaged but some sheets are a bit deformed and there are tiny brown spots on the side. I am wondering if there is an easy way for me to determine if the chip is still working. If it does not, can I still use the passport? Which countries require a biometric passport or actually use the data?
Also, how much of a problem can a lightly damaged/worn out passport be? Is it more likely to be an issue in some countries than others?
PS: Right now, I am preparing for a possible trip to the US and since there is still time, I will most likely ask for a (
costly, turned out requesting a new one was free, for some reason) new passport just in case but I would be curious to know if that's really necessary or about potential issues in other countries as well. The passport in question is still valid for more than three years, still has many free pages and was issued by a EU country participating in the visa waiver program.