Air fryers that gather your personal data and audio speakers "stuffed with trackers" are among examples of smart devices engaged in "excessive" surveillance, according to the consumer group Which? The organisation tested three air fryers ... each of which requested permission to record audio on the user's phone through a connected app. Which? found the app provided by the company Xiaomi connected to trackers for Facebook and a TikTok ad network. The Xiaomi fryer and another by Aigostar sent people's personal data to servers in China. Its tests also examined smartwatches that it said required "risky" phone permissions in other words giving invasive access to the consumer's phone through location tracking, audio recording and accessing stored files. Which? found digital speakers that were preloaded with trackers for Facebook, Google and a digital marketing company called Urbanairship. The Information Commissioner's Office (ICO) said the latest consumer tests "show that many products not only fail to meet our expectations for data protection but also consumer expectations". A growing number of devices in homes are connected to the internet, including camera-enabled doorbells and smart TVs. Last Black Friday, the ICO encouraged consumers to check if smart products they planned to buy had a physical switch to prevent the gathering of voice data.