The New Zealand ETA (Electronic Travel Authority) is a digital travel authorization required for eligible visa-waiver travelers and certain transit passengers before entering New Zealand. It can be applied for online, making the process quick and convenient. Applicants must provide accurate personal details, passport information, and complete any required declarations. Once approved, the NZeTA is electronically linked to the traveler's passport. Applying a few days before departure is recommended to avoid last-minute issues and ensure a smooth journey.