Spark has become the first telco in New Zealand to support an eSIM or electronic SIM card.
Many of the latest smartphones and smart watches support an eSIM or virtual SIM. This setup does away with a physical SIM card - meaning a customer can have more than one phone or data plan at once, or even belong to two different telcos as they juggle between home and work accounts, or use different accounts for different situations to save money.
The technology should also be a boon for travellers who want to grab a local account without the hassle of buying and inserting SIM card.
When the Herald last covered e-SIMs, back in September 2018, the verdict was that they were great for customers.
But Telecommunications Users Association head Craig Young said phone companies also feared that eSIMS made it easier to switch providers - hence some foot-dragging.