Stanford Wockets Activity Project (SWAP)

SWAP Protocol

Each participant will be given a:

  1. Smart mobile phone (HTC TOUCH DIAMOND2).
  2. Four motion sensors (Wockets), The four Wockets are provided so the participant can wear or carry two Wockets while the other two are being charged.
  3. Four bands for holding a Wocket on the dominant wrist and ankle, two pocket pouches for carrying a Wocket in a pants pockets.
  4. Two chargers, one for charging the phone and other for charging the Wockets.

Key Actions for Partners in Research

  • Plan to use the project mobile phone as your only phone while you are participating in the Wocket Project
  • Carry phone or keep it near you as much as possible 24/7
  • Wear or carry Wockets with you as much as possible (24/7)
  • Charge phone daily – preferably at night for at least 4 hours**
  • Charge Wockets daily – for least 4 hours
  • Perform "Swap Wocket" on phone whenever you start using different set of Wockets
  • Respond to prompts and text messages from project staff
  • Let project staff know if you have any questions ASAP dshine@stanford.edu [dshine] or phone # 650-725-8538

** Over night the phone will be charging and also the data will be uploading to the server (between 2-5am)

Steps in the Protocol

Wear Wockets and carry Phone 24/7

Putting Wockets in the Straps

The Wocket fits into the slot on the strap correctly only one way. Insert the Wocket such that the charger contact goes into specific space for it in the strap.


To put the Wocket in the strap


Wearing the Wockets 

The Wockets should be worn in the same position and orientation all the time. 

 

Charging the Phone

NOTE: To fully recharge the phone and upload the data it normally takes about 4 hours.

Charging the Wockets 

The Wockets need to be charged once about every 24-30 hours using the special charger provided.

      How to charge the Wockets

  1. Remove the Wockets being worn on the wrist/pocket and ankle and replace them with the Wockets that have been charging. The Wocket charger cord connects to the Wocket charger using the mini USB connector.
  2. Each Wocket connects to the charger with the charger contact on the Wocket sliding into one of the two connecting slots on the charge.
  3. When you connect each Wocket to the charger be sure the charger light for that slot turns on – meaning that the charger is working and the Wocket is being charged. This light will turn green when wockets are fully charged.

 

Swapping (exchanging) the Wockets

*** If you choose "Pocket" in the figure, you will be instructed to insert the Wocket into the pouch and put the pouch in the pocket of your pant on the dominant side.

Changing Wockets Location

TWO CRITICAL STEPS HERE!

  • Look closely at each Wocket you just removed from the charger and be sure the small green light is blinking. This blinking light tells you the Wocket is charged and ready to use.
  • You now need to tell your phone and Wocket server that that you are now starting to use a different set of Wockets. So you need to perform a SWAP application on the phone.

 

Prompts

Randomly throughout the day and evening (no more than X times) between the hours of 8am-8pm you will be prompted via your project phone. The objective of these random prompts is to pair the reported activity with the data that is collected by the wockets. The ring (the sound of bells) will sound off and if it is appropriate and safe, respond, if not dismiss or ignore.  If you are able to respond, you will be asked:

  1.  “We need your help!. What were you doing in the past 10 minutes?”
  2.  At the bottom of the screen you have the option to Answer or Dismiss.
  3. In the next screen, a list of 15 physical activities or sedentary level behavior will be displayed.
  4. Tap the appropriate activity on the scrolling list. After you make your choices, you will then be asked an additional question, “Were you…………….”
  5. This question attempts to more clearly identify your activity or behavior.
  6. Tap the most appropriate activity. If you choose more than one it will then prompt you for the activity that you did most of the time.  After responding, tap Hide.

Note: If you wish to manually enter some particular activity you just performed, tap on 'Q&A' and follow the instructions above.

 

Data Access

Only the research team will be able to access the data on the secure server, and your identity will not be stored with these data. The data to be transferred will include data from the motion sensors, information about how much you used your phone that day, including the number and length of phone calls, the number of text messages, and the amount of time you spent using other applications on the phone, such as the Internet browser. These data will be used to help monitor the sensor system’s battery life and understand how much battery power is needed to run similar projects. No information about the people you communicate with or what you are doing when you use applications, such as phone numbers, text message content, or websites visited, will be obtained from the phone by the research team.

Key Actions for Partners in Research

  • Plan to use the project mobile phone as your only phone while you are participating in the Wocket Project
  • Carry phone or keep it near you as much as possible 24/7
  • Wear or carry Wockets with you as much as possible (24/7)
  • Charge phone daily – preferably at night for at least 4 hours**
  • Charge Wockets daily – for least 4 hours
  • Perform "Swap Wocket" on phone whenever you start using different set of Wockets
  • Respond to prompts and text messages from project staff
  • Let project staff know if you have any questions ASAP dshine@stanford.edu [dshine] or phone # 650-725-8538

** Over night the phone will be charging and also the data will be uploading to the server (between 2-5am)

 

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