Recently, we have seen growing interest among patients with chronic conditions to track their health-related data. There are many wearable devices available to track different health data. However, tracking pain is mostly done by using pen and paper or mobile apps. In collaboration with a healthcare professional we designed a portable pain tracker, PainBit. To gain an understanding of patients' perspectives on our tracker, we conducted two case studies with patients living with chronic pain. We asked patients to use PainBit for two weeks and later conducted semi-structured interviews with them. Patients found PainBit useful for tracking their pain and they preferred using a physical device, PainBit, to track their pain over using a mobile phone. Patients suggested reducing the size and weight of PainBit in the next iterations. We report on the lessons learnt through our design process and the evaluation studies.

翻译：近年来，慢性病患者对追踪自身健康相关数据的兴趣日益增长。目前已有多种可穿戴设备可用于追踪不同的健康数据。然而，疼痛追踪主要通过纸笔或移动应用程序完成。在与医疗专业人员合作下，我们设计了一款便携式疼痛追踪器PainBit。为理解患者对我们追踪器的看法，我们与慢性疼痛患者进行了两项案例研究。我们要求患者使用PainBit两周，随后对他们进行了半结构化访谈。患者认为PainBit对追踪疼痛很有帮助，并且相较于使用手机，他们更倾向于使用物理设备PainBit来记录疼痛。患者建议在后续迭代中缩小PainBit的尺寸并减轻其重量。本文报告了我们在设计过程和评估研究中获得的经验教训。