Passport stamps: Passport stamps are a souvenir of sorts for travellers, but some countries are no longer using them. Some travellers feel nostalgic about the stamps, while others find them a hassle.
SmartGates: SmartGates are devices that use facial recognition and electronic chips to process passengers through passport control. They are faster and more secure than stamps. Australia was the first country to adopt them in 2012.
Future of passports: Some countries, such as Singapore, are planning to eliminate physical passports entirely and use biometrics instead. This could make travel safer and more convenient, but also raise privacy and security issues.