Lusann Yang

User Polling


After a couple long discussions with the rest of the group, we realized we needed more information from potential users about what they want in a product. How should we position this product? Who would use it, where would they use it, what would they control with it? How much would they be willing to pay?

We polled 26 friends and acquaintances research to the potential user base for our Easy Off switch.

The poll can be found here.

About the Users

Before examining their responses, it would be helpful to understand who was polled. Our sample set was predominately graduate students or young professionals with an undergraduate degree. The majority of people we questioned were between 22 and 35 years of age. The majority of people we questioned live in Boston.

Of the 26 people polled,

  • 17 people (65%) said yes, they have electrical devices they unplug when they leave for vacation. Roughly 2 out of 3 people polled are not only of the difference between a device which is simply turned off and a device which is cut off from its power supply, but also occasionally prefer that a device be completely cut off from its power. Whether their concern is vampire power, surge protection, or something else is unknown.


  • 3 people (12%) said yes, they have devices that they unplug at night. This relatively small proportion of our sample set, 1 in 8, goes out of their way to cut off all electrical contact to at least one device on a daily basis.


  • 18 people (69%) said yes, they always turn off the lights when they leave an unoccupied room. Roughly 2 out of 3 people polled maintain this common sense, power-saving habit. Users of the Easy Off could easily piggy back off of this habit by placing the button by the light switch in any room, making it easy and habitual to hit the Easy Off when they leave the room.


  • Background Knowledge

    What do the users already know about ghost / phantom / vampire power? How knowledgeable is a typical user about the power consumption of his or her devices?

    We asked our sample set whether or not they knew what vampire power is. Only 12 people (46%) said they knew what it was. Somewhat less than half of our user base is even aware of vampire power as an issue. Thus, any attempt to pitch this product as a power saving tool should involve some amount of user education as to what vampire power is.

    This number becomes more interesting when we recall that 17 people (65%) said they unplug devices when they leave for vacation. This indicates that at least 5 people unplug devices when they leave for vacation for reasons other than vampire / phantom / ghost power; either they’re doing it for surge protection, or because of a poorly understood sense that they ‘should’ or for some other reason. At least one user polled responded that she unplugs certain devices when she leaves because her mother did so.

    We asked whether or not users were aware of products that address vampire power. Only 5 people (19%) said they were.

    Some of their responses:

  • I'm vaguely aware that the public library has a few devices to loan out allowing you to plug in various electronics and see how much power they draw while "off" but I've never looked into it further.
  • I know they sell power strips that are "switched" by a dominant outlet -- if the dominant outlet isn't drawing power (say, if you turn off a lamp that is plugged in to it), the whole power strip stops giving power.
  • Power strips with an off switch :)
  • Power strips with a relay that switch off when they detect only a tiny load or when the load on one specific outlet goes off.
  • Timer based switches
  • Three users were aware of one of our competitors, a type of power strip that is controlled by a dominant outlet. The power strip cuts off all the power to all other outlets when the dominant outlet is not drawing power. This allows a user to save vampire energy consumed by the peripherals to his computer (printer, speakers, monitor, etc) when his computer is off. Various iterations of this power strip (by Smart Home USA, Westinghouse, and Belkin) can be found on the market, and average around $25 in price.

    Our Product

    We quickly introduced our product with some information about vampire power and a short description of the Easy Off button.

    We asked whether or not users thought they had a use for the Easy Off. We had an encouragingly high positive response, with 18 people (69%) saying yes, they could use it.

    We asked them what devices they might use it to control. Many people mentioned using it for computers, printers, and associated peripherals. A few people mentioned using it for various chargers. Here are a handful of answers:

  • Computer (at work and home), lamp and alarm clock on bedside table
  • I don't have many (any?) "big" devices with standby power requirements, and I generally want my cell charger, electric razor charger, etc, to be active all the time. (I don't want to have to think about charging the electric razor for only the hour before I use it; it doesn't draw that much power.)
  • TV and other TV related items, washing machine; drier, Office Computer (but only if my company paid for it)
  • Computer, TV (and associated extras), chargers
  • Music player
  • Computers, lamps, stereo, TV, Wii (console games), hairdryer, washing machine, dryer, dishwasher... it would be great to be able to turn off kitchen appliances when you go off on holiday (since I can't reach those plugs).
  • Lights, microwave, non-computer appliances.
  • I don't have a TV or VCR, and the only devices I can think of that are plugged in unnecessarily are my phone and laptop. However, I'd like them to be charged fully before turning off the juice to them.
  • While we had envisioned using the power strip at a desk, for a TV, or in a kitchen, it was interesting to imagine using it to control major appliances - like washing machines, dryers, and dishwashers. It was also interesting to realize that several people keenly aware that chargers draw phantom energy. The user who associated it with a music player was clearly aware that one feature of our product is that it effectively adds remote control capability to many devices.

    We asked them where they might use it. People were allowed to check more than one box, so the totals add up to more than 26.

    We asked whether or not users would by the Easy Off if it came as a power strip with a remote button. 19 people (73%) said yes! Again, we received an overwhelmingly positive response. However, we suspect that sample selection may have introduced a bias to this question, as everyone taking the poll understood that this product is a class project by a friend. The fact that 19 people said they would buy it when only 18 people said they had a use for it points towards inconsistency on at least one person’s part.

    We asked whether or not users would by the Easy Off if it came as a single plug with a remote button. 18 people (69%) said yes. Again, our results are encouragingly high.

    We asked users how much they would pay for an Easy Off, in several different ways.

    First, we wondered if users would buy an Easy Off button implemented on a power strip. We asked them how much they would be willing to pay for one, and we asked them how much they thought an average American would be willing to pay for one. On average, our friends were willing to pay $11.50 for a power strip version of the Easy Off, and that the average American would pay nearly twice that, $22.33. Interestingly, some people thought the average American would be willing to pay up to $75 for a power strip Easy Off!

    We then asked if users would buy an Easy Off button implemented on a single plug. We asked them how much they would be willing to pay for one, and we asked them how much they thought an average American would be willing to pay for one. On average, our friends were willing to pay the same thing for the single plug as the power strip, $11.50. However, they thought the average American would pay less than that for the single plug item, only $11.10.

    We asked what issues, if any, our users could foresee in using this device.

    For the most part, people were concerned with mustering the mental energy to build using the Easy Off into their lifestyle:

  • Forgetting that I have things off with Easy Off and being annoyed when they won't boot.
  • Laziness...
  • It's another thing to think about.
  • More than one switch could get annoying fast.
  • People would have to remember to use them. I don't see it as particularly memorable now, but hopefully people could learn to incorporate this into their regular routines.
  • Adds one more annoying thing that I need to remember to do all the time. Plus, if someone hits the button at the wrong time, or if I forget and hit it, my devices all get powered off when they shouldn't.
  • I would probably forget to turn it on and off a lot of the time. It would almost be better if rather than "cutting off all power" when you clicked the button, it was able to tell when the item(s) was off and then stopped the phantom power from being used.... takes one step for the end user out of the process making it more efficient for them.
  • Forgetting to use the Easy Off entirely (I have trouble remembering to turn off lights when leaving a room sometimes, yet another thing to remember is not optimal).
  • This user feedback reflects our primary concern with this product. Future iterations will necessarily feature better strategies to help users incorporate the Easy Off into their daily habits. Without changing our user’s habits, a typical person might easily never use the “Easy Off” feature.

    Some people were concerned with logistical issues:

  • Annoyance when you think you've been charging something but you haven't. I guess you would train yourself with the new habit? It sounds like the sort of thing I'd mess up.
  • If you put the wrong set of things on it, might not want them on/off at the same time.
  • For the power strip version, if it is envisioned with a single switch, it would be bothersome having to switch off all attached devices when I may only want to switch off some.
  • Some devices that use phantom power people will want to be able to use automatically or devices like DVRs that people will want to stay on.
  • I want my cell charger on at night, off during the day, whereas monitors and printers want to be off at night, on during the day (or on only when I want it for the printer)
  • Accidentally cutting power to PC when I wanted it to be in standby mode.
  • Losing unsaved work on my computer.
  • We have considered several strategies to help solve these problems. We’ve considered giving the Easy Off a time delay coupled with an off indicator (a chime, a light, a click, or some other type of indicator) so that if a user accidentally hits the Easy Off, the user has a minute or two to turn it back on again before all power is cut. We’ve considered giving each individual outlet its own “always on” switch, so that objects like DVRs or alarm clocks are always powered.

    A couple people were concerned with having too many buttons, and their proposed solutions were startlingly similar:

  • With the single plug version I think it would be frustrating to have the number of switches in my home multiply by installing such an EasyOff device. It would be awesome if the device could be designed to be incorporated into devices directly such that it replaces standard power buttons. I don't know whether it would be better to market it to companies rather than the individual. Alternatively, perhaps it would be nice to be able to control all the EasyOff devices at a central hub, but then I think you're generating a device that in itself will use up power...
  • If I had multiple appliances plugged into individual Easy Off plugs and they were in various locations (and could not be on the same power strip), I'd want to control them all with the same remote button.
  • A brilliant suggestion. We have already identified RF circuitry as an ideal candidate for low power remote control of the Easy Off; it would be sensible to make all Easy Off units remote controllable via the same unit, allowing users to use only one switch for several devices in different locations.