A QR code makes a device rental look simple: scan, pay, unlock, return.

The client experience behind that QR code is not simple. A product team still has to decide whether the scan should open a mobile web flow, deep-link into a native app, or support both. That choice affects acquisition, payment behavior, device control, customer support, and the evidence available when something goes wrong.

This article presents a decision framework for shared power banks and other unattended shared-device systems. It is not a universal recommendation for H5 or native. The right answer depends on where users come from, what the payment provider supports, and how much lifecycle engagement the service actually needs.

Start with the rental state machine, not the screen

Before selecting a client, define the system events that must happen during a rental: