The same eight photos, at pickup and at return.

01

Guide the capture

Follow eight matching exterior angles. Basic local checks flag blur, glare and low resolution before save.

按提示拍完八个外观角度。太糊、反光太强、分辨率不够的照片会被拦下，重拍才能存进去。

02

Line the return shot up

At return, your pickup photo fades into the viewfinder so you can stand roughly where you stood before. Photos that line up are what makes any later comparison worth anything.

还车拍照时，取车那张会淡淡地叠在取景框里，帮你站回差不多的位置。两张照片能对上，后面的对比才有意义。

03

Look yourself, then export

View both passes side by side. Highlighted areas are hints for your own eyes, never findings. Only notes you confirm go into the exported record.

取车和还车两组照片并排看。高亮出来的只是"值得你自己看一眼的地方"，不是结论。只有你自己确认过的记录，才会写进导出的文件里。

04

Optional trusted timestamps

You can ask an independent RFC 3161 timestamp authority to certify that a photo’s fingerprint already existed. Only a 32-byte SHA-256 fingerprint is sent — never the photo, the vehicle, the trip or you — and it cannot be turned back into the image.

It certifies that the fingerprint existed by that moment. It does not prove when the photo was taken.

可以让一家独立的时间戳机构（RFC 3161）为照片的指纹出具证明。发出去的只有 32 字节的 SHA-256 指纹 —— 照片、车、行程、你本人，一个字都不发，而且指纹反推不回图像。它证明的是「这个指纹在那一刻之前就存在了」，不是「照片是那时候拍的」。

05

Free, and it stays that way

No subscription, no in-app purchase, no paywalled export. Trusted timestamping is included and is off until you turn it on. Your records live in the app container on your device, so nothing stops working if you stop using the app.

不订阅、不内购、导出不收费。可信时间戳也包含在内，默认关闭，你自己开。记录存在设备本地的应用容器里，所以就算你不再用这个 App，已有的记录也不会失效。

06

Nothing is uploaded

No account, no analytics SDK, no advertising SDK, no cloud AI. The optional timestamp request is the only feature that uses the network, and it carries a fingerprint and nothing else. Core capture and export work in airplane mode.

没有账号、没有统计 SDK、没有广告 SDK、没有云端 AI。唯一联网的功能就是那个可选的时间戳，而它只带一个指纹。拍照和导出在飞行模式下照样能用。