  The balance between protecting users' privacy while providing cost-effective
devices that are functional and usable is a key challenge in the burgeoning
Internet of Things (IoT) industry. While in traditional desktop and mobile
contexts the primary user interface is a screen, in IoT screens are rare or
very small, which invalidate most of the traditional approaches. We examine how
end-users interact with IoT products and how those products convey information
back to the users, particularly `what is going on' with regards to their data.
We focus on understanding what the breadth of IoT, privacy, and ubiquitous
computing literature tells us about how individuals with average technical
expertise can be notified about the privacy-related information of the spaces
they inhabit in an easily understandable way. In this survey, we present a
review of the various methods available to notify the end-users while taking
into consideration the factors that should be involved in the notification
alerts within the physical domain. We identify five main factors: (1) data
type, (2) data usage, (3) data storage, (4) data retention period, and (5)
notification method. The survey also includes literature discussing
individuals' reactions and their potentials to provide feedback about their
privacy choices as a response to the received notification. The results of this
survey highlight the most effective mechanisms for providing awareness of
privacy and data-use-practices in the context of IoT in shared spaces.
