Data collection through the Internet of Things (IoT) devices, or smart devices, in commercial buildings enables possibilities for increased convenience and energy efficiency. However, such benefits face a large perceptual challenge when being implemented in practice, due to the different ways occupants working in the buildings understand and trust in the data collection. The semi-public, pervasive, and multi-modal nature of data collection in smart buildings points to the need to study occupants' understanding of data collection and notification preferences. We conduct an online study with 492 participants in the US who report working in smart commercial buildings regarding: 1) awareness and perception of data collection in smart commercial buildings, 2) privacy notification preferences, and 3) potential factors for privacy notification preferences. We find that around half of the participants are not fully aware of the data collection and use practices of IoT even though they notice the presence of IoT devices and sensors. We also discover many misunderstandings around different data practices. The majority of participants want to be notified of data practices in smart buildings, and they prefer push notifications to passive ones such as websites or physical signs. Surprisingly, mobile app notification, despite being a popular channel for smart homes, is the least preferred method for smart commercial buildings.

翻译：通过商业建筑中的物联网设备或智能设备进行数据收集，为提升便利性和能源效率提供了可能。然而，在实际实施中，这些益处面临巨大的感知挑战，原因在于建筑内工作人员对数据收集的理解和信任方式存在差异。智能建筑中数据收集的半公共性、普遍性和多模态特性，凸显了研究住户对数据收集的理解及通知偏好的必要性。我们对美国492名在智能商业建筑中工作的参与者进行了在线研究，内容涉及：1）对智能商业建筑数据收集的认知与感知，2）隐私通知偏好，以及3）影响隐私通知偏好的潜在因素。研究发现，约半数参与者虽注意到物联网设备和传感器的存在，但对物联网数据收集与使用实践并不完全了解。我们还发现了许多关于不同数据实践的误解。大多数参与者希望在智能建筑中获得数据实践通知，并偏好推送式通知（而非被动式通知，如网站或物理标识）。令人惊讶的是，移动应用通知——尽管是智能家居中的热门渠道——在智能商业建筑中却是最不受欢迎的方式。