
ATT-NFC
App to manage Ascon Tecnologic ATT1 NFC temperature transmitter
Ascon Tecnologic · com.gz.atnfc
- Signature matches the Google Play version Details
At a glance
- Latest version
- v1.1.21 (15)
- Updated
- May 31, 2026 (4 months ago)
- APK size
- 5.2 MB
- Requires
- Android 6.0+ (API 23)
- CPU support
- x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
- Category
- Productivity (app)
- Listed since
- Mar 1, 2022 (at least)
- Permissions
- 9 (3 sensitive)
- Website
- ascontecnologic.com
- Developer contact
- [email protected]
- Privacy
- Developer's privacy policy
About this APK
ATT-NFC is an app by Ascon Tecnologic in the Productivity category, listed since at least March 2022. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.
Since version 1.1.19, the APK grew from 4.5 MB to 5.2 MB. It asks for 9 permissions, 3 of them sensitive: read phone status and identity, read shared storage and modify shared storage. It asks for the same permissions as version 1.1.20.
Description
From the listing uploaded by “appupdater”.
Version history
3 versions are listed, going back to v1.1.19.
Security & authenticity
Signing certificate
- Signature matches the Google Play version Checked by the source store on May 31, 2026.
- Certificate from Google Play App Signing Google keeps the signing key for the developer, so the certificate carries Google's name.
- Same certificate as the 2 other versions checked
Store checks and file details
- Developer signature verified May 31, 2026
- Validated against Google Play May 31, 2026
- Signed byCN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
- Signing certificate (SHA-1)8C:89:A5:7B:79:8C:E1:64:CC:5E:85:59:B1:FD:2F:E5:10:07:15:1B
- File MD56416d9e784818db5029a2c2975e7e9c3
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.
Permissions (9)
ATT-NFC requests 9 permissions, 3 of them sensitive.
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Read phone status and identity Sensitive android.permission.READ_PHONE_STATE
- Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
- Internal broadcast protection (app-defined) com.gz.atnfc.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Nfc android.permission.NFC
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- Run foreground services android.permission.FOREGROUND_SERVICE
- View network connections android.permission.ACCESS_NETWORK_STATE
Required hardware & features
- Basic touch input android.hardware.faketouch
- NFC android.hardware.nfc
- Portrait screen android.hardware.screen.portrait
ATT-NFC APK: questions and answers
Can I install this APK over the version I already have?
Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.
Is the ATT-NFC APK safe?
No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 6416d9e784818db5029a2c2975e7e9c3.