<<Print>>

Many popular iPhone apps from airlines, clothing stores and travel sites may be viewing your on-screen activity without you knowing.

An investigation has revealed that this data is sent back to app developers to help improve their services. 

Major companies including Expedia, Hollister and Air Canada, are monitoring what you do in their apps, including every click, tap and swipe. 

One expert fears that data from these session replays may not be sufficiently masked to protect sensitive data.