Hailie Sensor® (Adherium, Auckland, New Zealand)
Similar to the Propeller sensor, the Hailie sensor can also track both preventer and reliever use, logging the date and time of inhaler actuation. The Hailie is paired via Bluetooth to a smartphone application and provides notifications and reminders. The application shows bar charts providing instant feedback on adherence and reliever use, which can be sent to an HCP portal, through a secure cloud(37, 38).
The Hailie sensor is currently limited to use with pMDI, Diskus® and Turbohaler® devices. The next generation Hailie sensor (currently only available for Symbicort® HFA) also includes physiological measures that detect inspiratory flow, inhaler shaking and inhaler orientation(37).
The SmartTrack device has been rebranded to Hailie and clips around a pMDI. The SmartTrack inhaler has been shown to improve adherence to ICS in both adult and paediatric asthma patients by reminder notifications, with studies demonstrating significant reductions in severe exacerbations and fewer hospitalisations(39, 40).
The SmartTurbo which is specifically for use with the Turbohaler device is able to detect the presence or absence of the cap on the mouthpiece of the inhaler. Data is uploaded, recording pairs of anticlockwise and clockwise turns as inhaler actuations(41). The use of the SmartTurbo has been validated by comparing actuations recorded on the EMD to paper diaries and found to be highly sensitive over a 12-week period(41). In a 52-week randomised controlled trial, there were no reports of device failures or inaccuracies, suggesting that this is a reliable tool to assess Turbohaler usage(42).