# CSS Mobile Security — Chiyu Smart Security

> Chiyu Smart Security (iPhone/iPad app by Pingjen Chang.)

- Source: https://appshunter.io/ios/app/css-mobile-security/id1503143817 (this page in markdown: same URL + `.md`)
- Developer: [Pingjen Chang](https://appshunter.io/developer/1503143816)
- Category: Lifestyle, Entertainment
- Price: Free
- Age rating: 4+
- Requires: iOS 12.1 · 14 MB
- Languages: English
- Released: 2020-03-24
- Data updated: 2026-03-08
- User reviews in markdown: https://appshunter.io/ios/app/css-mobile-security/id1503143817/reviews.md

## What is CSS Mobile Security?

CSS Mobile Access can generate an ID for Bluetooth and NFC reader manufactured by Chiyu Technology. Your mobile phone is your key to doors, the badge to time attendance, and digital event trigger like a power switch. All the solution accompany with your own mobile phone.


## Version history (last 2 releases)

### 2.2.0 — 2020-12-18

Add dBm value setting
Add short and long distance switch

### 2.1.1 — 2020-03-24

No release notes.

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## More apps by Pingjen Chang

- [SITA ACS Mobile](https://appshunter.io/ios/app/sita-acs-mobile/id6449924131)

All apps by Pingjen Chang: https://appshunter.io/developer/1503143816

## Related topics

[css mobile](https://appshunter.io/ios/topics/css-mobile) · [css mobile security](https://appshunter.io/ios/topics/css-mobile-security)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-03-08.*