Read your card
Field-proven flow for VDO DTCO 4.1a, driver card in slot 1 and Android Chrome.
BUILT FOR DRIVERS
Your day. In your hands.
Connect the tachograph. Read your card. Understand your 56 days — clearly, calmly and on your phone.
Verified on DTCO 4.1 / 4.1aAndroid · Chrome7 languages in the appSafety first: connect and read only while the vehicle is stationary.
REAL READ · DTCO 4.1
No promises. Proof.
Recorded in a bus: confirmed LIVE data and a driver-card read, packet by packet.
269 packets · 67.3 KB · completedReview your days
Driving, work, availability and rest, with phone-local time and a visible read timestamp.
Stay in control
Choose when to show saved history. Export a user CSV overview or delete local data.
Three steps to your history
- Park, insert your own card in slot 1 and prepare an Android phone with Chrome.
- Enable ITS data and pair the phone. Compare the PIN on both devices before confirming.
- Open the app, connect the tachograph, then read the card. Wait until processing and saving are confirmed.
VDO DTCO 4.1a — first pairing
- From the normal display: press OK, down twice, select DRIVER 1 and press OK.
- For ITS: down twice, SETTINGS, OK, ITS DATA, OK, then confirm OK.
- Return to the normal display. OK, down twice, DRIVER 1, OK; down three times, BLUETOOTH, OK, PAIRING.
- Press OK on PAIRING. When the tachograph asks you to connect, select DTCO in Android Bluetooth settings.
- Compare the six-digit PIN on both screens. Confirm on the phone; on DTCO 4.1a select Yes with down and confirm OK.
- After successful pairing, open TachoCommand and choose the device in the browser dialog.
Menu names depend on device language. These steps cover the verified 4.1a; other versions require testing.
If the device is missing, check Bluetooth, Nearby devices permission, ITS and the card slot. Do not delete existing pairing as the first step.
Clear about what is proven
A proven download does not establish support for every model. Other tachographs and iPhone/Safari are not confirmed for this path. A basic driving-break check under the standard 4 h 30 min rule is available. It is not a full infringement analysis or DDD signature verification.
Data and privacy
Card history is processed and stored locally. Limited technical telemetry supports diagnostics; it excludes driver names, raw card data and location. See the privacy policy for details.
Ready for your next break?
Open free beta
Access for everyone, without sign-in, email confirmation, purchase or a time limit during the open beta. Cross-check times on the official tachograph.
Open beta app