An NRI living in the Philippines is planning to move to the Netherlands for studies and needs to renew their Indian passport. They are concerned about changing their signature on the passport as they have recently turned 18 and their current signature is from childhood. While some sources suggest an affidavit for signature change, the user only possesses a passport and no other Indian legal documents or bank accounts. The advice received indicates that a passport remains valid even with a signature change and that renewal officials will handle signature updates. It's suggested that a lawyer might be consulted for professional advice, especially as the individual is an adult NRI. The general consensus is that minor signature variations are normal and unlikely to cause issues during passport renewal, with the focus being on the signature being in the person's handwriting rather than matching an old specimen, particularly for non-financial transactions.