Chapter 1: Necessary Hardware Ecosystem
To ensure data transfer without loss of cryptographic integrity, your mobility kit must comply with the following 2026 standards:
- OTG-Supported Mobile Device: Most modern Android devices with a USB-C port include this, but it is vital to verify that the option is active in "System Settings."
- Shielded OTG Adapter: We recommend USB 3.0 standard adapters to prevent voltage drops during the reading of the card's digital certificate.
- SmartCard Reader: Must be compatible with the ISO/IEC 7816 standard, which governs G1 and G2V2 driver card chips.
Technical Data: Why does my reader fail?
40% of reading errors on mobile devices are due to insufficient power supply. Low-quality card readers consume more power than some mobile ports can provide. Using the TachoTools App optimizes port energy consumption to ensure complete downloads even on mid-range terminals.
Chapter 2: Connection and Download Protocol
Follow these steps to transform your mobile into a professional inspection terminal:
- Coupling: Attach the reader to the OTG adapter and insert the driver card with the chip facing up (or as indicated by the model).
- Linking: Connect the assembly to the mobile. If it's the first time, Android will ask: "Allow TachoTools to access the USB device?". It is critical to select "Always" to avoid interruptions.
- Extraction: The application will start reading the .DDD file. Do not disconnect the equipment until the progress reaches 100% and the digital signature is validated in our cloud.
Chapter 3: Strategic Advantages During Roadside Inspections
Carrying an OTG reader in your glove box is a legal security strategy. During a roadside inspection, if an officer detects a lack of recent downloads, you can perform the operation on the spot. Demonstrating that you use proactive control tools like TachoTools projects an image of diligent compliance that inspectors value positively under the EU Mobility Package I framework.
Hardware FAQ
TachoTools Analysis: Total Mobility
In 2026, relying on an office computer to download cards is a bottleneck that leads to "out-of-deadline" fines. **Mobile downloading** is the modern standard of efficiency.
Our Recommendation: Get a certified OTG reader and keep it in your cabin kit. Performing a weekly backup of your driving times allows you to correct logging errors before they turn into irreversible fines.