Interactive Prototype Smart home with healthcare for the elderly - adrienerice/The_Chosen_Ones GitHub Wiki

Prototype Ideas:

An application which can control smart home devices, track health status, detect symptoms of illnesses and send notifications and emergency messages. The interface design emphasis on usability, effectiveness, efficiency, learnability, memorability, safety and privacy. Other functions: voice control, blood pressure measure, blood sugar measure, CO2 alert, heart rate measure and so on.

Example low-fi prototype: https://intelicare.com.au/?gclid=Cj0KCQjws4aKBhDPARIsAIWH0JXsXQ8Qke3mFRdjdjJW5MxtWauRAjz9YDzJDFG_B_sB3t-e85_TJj0aAl_PEALw_wcB

Prototype Interim

This is a JustinMind file, if you don't have this application, please see the screen shots below. https://github.com/adrienerice/The_Chosen_Ones/blob/healthcare_for_the_elderly/healthcare%20app(web%20version)/Prototype%201.vp

Home page:

Activities page:

sports & walks page:

Meal track page:

Health page:

Contacts page:

Notification page:

emergency contact page:

call page:

Prototype Evaluation

After applying several tasks for the participants, we get some feed back and change some contents to build a final prototype. The model I applied to this evaluation is based on Technology Acceptance Model (TAM) by Davis et al. It is important to evaluate smartphone pulse oximeters from users’ experience depending on perceived usefulness, perceived ease of use and external variables, such as user interface, system accuracy and recommended instruction.

Perceived Usefulness

  • PU1: I find that this application is useful in daily life.
  • PU2: I find that using healthcare app provides benefits.
  • PU3: I find that using healthcare app helps me find unobvious diseases.
  • PU4: I find that using healthcare app helps me track my health.

Perceived Ease of Use

  • PEoU1: I find that healthcare app is easy to use.
  • PEoU2: I find that symbols in healthcare app are clear.
  • PEoU3: I find that instructions about healthcare app are easy to follow.
  • PEoU4: I find that I can use healthcare app without experts’ help.

Attitudes

  • A1: I think that it is positive to use healthcare apps.
  • A2: I think that it is negative to use healthcare app.
  • A3: I have no idea about using healthcare app.
  • A4: I think that it is significant to use healthcare app globally.

Behavior Intention

  • IU1: I would like to use healthcare app continuously.
  • IU2: I would like to recommend healthcare app to my elderly friends.
  • IU3: I probably not willing to use in future.

Actual Use

  • USE1: How long does it take to get the blood pressure from beginning?
  • USE2: How frequently do you use healthcare app?
  • USE3: How long does it take to make emergency call from meal page?

Perceived Strategic Value

  • PSV1: Save medical resources
  • PSV2: Reduce elderly’ costs
  • PSV3: Decrease the risks of related diseases
  • PSV4: Improve the health awareness

Usability test

Based on Neilsens’ Usability Heuristics, we are supposed to consider following usability:

  1. Visibility of system status
  2. Match between system and the real world
  3. User control and freedom
  4. Consistency and standards
  5. Error prevention
  6. Recognition rather than recall
  7. Flexibility and efficiency of use
  8. Aesthetic and minimalist design
  9. Help users recognize, diagnose, and recover from errors
  10. Help and documentation

Following table are developed metrics about usability tests for users:

Tasks: Task success Task Time Errors Learnability Issues-based Metrics Self-reported Metrics Combined & comparative Metrics Live Website Metrics Card-sorting Data

  1. Identify what value is alarming x x x x x
  2. Identify the blood pressure x x x x
  3. Find Doctors' contact number x x x
  4. Back to home screen x x x x x
  5. Identify the heart rate x x x x x
  6. Identify the notification of medicine x x x x x
  7. Identify the cause of alarm x x

As the results show that, participants are willing to have this version of application. But some aspects should be concerned, such as the readable of charts and graphs.

Prototype Final

Then I conducted a final site map as follow:

Here is the link of final prototype https://github.com/adrienerice/The_Chosen_Ones/tree/healthcare_for_the_elderly/healthcare%20app(web%20version)/health%20app

This final prototype is intended to be APP, however due to the hardware limitations, I decide to implement it as websites. By select "Toggle device tool bar" in "Inspect", the website will be displayed in phone version. Based on the site map and interim prototype, the structure of final prototype does not changes a lot. Graphs and charts in daily activities are changed, so the users can read and understand the features much easier. More functions are added in Health track page. Based on the hardware in wearable device, the sensors are able to detect heart rates, blood pressure, blood sugar, sleeping hours and activity hours. The result of sensor will be displayed on that page in real time and will be renewed every 2 seconds. If some results are higher or lower than normal range, it would be alarmed by colors.

Health track page: