does it have to be recalibrate it after a number of uses

Over time, all alcohol testers need to be calibrated to maintain accuracy, even police units. For BACtrack Mobile, we recommend getting it calibrated once a year, though it may continue to give accurate readings for longer than that. Please refer to the BACtrack website for calibration instructions or contact BACtrack Customer Support by emailing support(at)bactrack dot com.

Can more than one person have the app / access to readings. e.g. for monitoring another person for interventions?

No. It's stored locally on the phone

is it compatible with nokia206

I bought the Bactrack breathalyser for my Husband for Christmas and it is compatible with iphone and android telephones.

I am getting a positive reading when I have not had any alcohol. Is this common or is my unit faulty?

Hi There, is not common at all. If it's a Vio, take off the battery and check if they still good. Low battery can make that mistake. In any case, reset the app doing this: hold the home button and lock screen button (for iphones) until the black screen with the white logo comes up. For android check how to reset. When dis u buy the bacTrack? All the best.

Bactrack Mobile Smartphone Breathalyser

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Sold byAmazon NorwayDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

Stay smart, stay safe! 🚗💨

UBER INTEGRATION - Call a ride directly from the app for safe travels.
ONE YEAR WARRANTY - Peace of mind with a hassle-free replacement guarantee.
ZERO LINE TECHNOLOGY - Know exactly when you'll be sober again.
SMARTPHONE INTEGRATION - Seamlessly connects with your device for real-time updates.
PROFESSIONAL GRADE ACCURACY - Experience police-grade precision in your pocket.

The BACtrack Mobile Smartphone Breathalyzer offers professional-grade accuracy with wireless connectivity to your smartphone. Utilizing advanced Xtend Fuel Cell Sensor technology, it provides reliable BAC readings and estimates when your BAC will return to 0.00%. Compatible with Apple and Android devices, it also features Uber integration for safe transportation and comes with a one-year warranty.

Specifications

ASIN	B00CFN1HNY
Batteries	1 Lithium Ion batteries required. (included)
Best Sellers Rank	#74,524 in Health & Household ( See Top 100 in Health & Household ) #18 in Personal Breathalyzers #3,496 in Sales & Deals
Customer Reviews	4.2 4.2 out of 5 stars (1,535)
Date First Available	April 20, 2013
Item model number	BT-M5
Manufacturer	BACtrack
Product Dimensions	1.75 x 0.63 x 2.75 inches; 2 ounces

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Good experience, but the tracking updates could be better.

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