playtime erika lewis john raczek ryan tippett. objectives game outdoor collaborative physically...

PlaytimeErika Lewis

John Raczek

Ryan Tippett

Objectives

• Game• Outdoor• Collaborative• Physically Active• 10-15 year old kids

Description• Equipment

• 1 Ball• 2 Goals• 1 Glove per player

• Rules• 2 teams• Players earn points by capturing opposing players’ flags• Flags a recapturing by gaining control of ball• Teams earn points by throwing ball into goal• Goal points are dynamic, value is the number of flags the team has at time of goal

How the Game Works - RFID

• RFID system consists of three parts: • Scanning antenna• Transceiver to decode data• Tag with info.

• Flagging Dynamic• Player A touches Player B, sends “deflag” signal• Goal picks up this state change, updates display• Ball sends out “reflag” signal, acquisition returns flag

How the Game Works - RFID• Teams each have a main signal

• Individual team members have another unique ID• Glove System:

• Embedded Passive tag• Very short signal distance• Long life span

• Goal System: • Active RFID• Large signal range, tracks RFID objects in playfield• Sends out powering signal to gloves

• Ball: • Emits “reflag” signal constantly• Scores goals by hitting pressure plate in goal, no RFID

required

Feasibility• Gloves: Passive RFID

• Very cheap, approx. $0.50• Parts woven into gloves, lesser chance to

break• Goals: Active RFID

• More expensive, approx. $5.00 or more• Larger device: goal net, hard plastic

construction, pressure plate, interface screen• Currently existing technology

• NERF “Cosmic Catch”• Shorter development time• Plan around previous product’s shortcomings

Goal Display

Inactive Goal Screen

Goal Display

Setting up a game

Goal Display

Screen during play

Glove

Display screen is off.

Display screen is on.

Glove

Player 3 - receives an individual point for capturing player 2 flag.

Player 2 - flag light turns red to indicate “no flag”.

Prototyping

• Session 1• Tested game setup (4 players

independently)• Tested game play with 4 players

• Session 2• Tested game setup without instructions• Tested game setup with instructions• Tested game setup with 2 “team captains”• Tested taking and regaining flags

Lessons Learned

• The position of the start button on the goal display was in a bad location. Users were pressing start before setting the time because the button was near the locus of attention of the last interaction.

Lessons Learned

• The goal display should more clearly show that the inner portion is for display only, not a touch screen, and that the input occurs sole through the buttons on the frame and the buttons on the gloves.

• Add a help screen that would show how to set-up the game in several easy to follow steps.

Next Steps

• Test game with kids• Test devices to measure physiology

during game play (heart rate, etc)• Alter point calculations based on

these physiology measures (promote participation)