Felix von Reischach - PhD defence

Over the last years Felix looked at how mobile phones can enhance the shopping experience in the real world. In particular Felix compared different identification techniques (e.g. text input, bar code, nfc) [1] and at mapping the design space for product recommendation systems on mobile devices [2]. We had an interesting discussion at the PhD defense and I think we will see many products and services popping up in the future.

Being in Zürich I took the opportunity to see more of Florian's group. There are a lot of exciting projects going on, see their Wiki for details. I looked especially at the work on mobile platforms and public displays. The AppAware application (http://appaware.org/) on Android has an amazing potential. Users share events (what applications they are installing, removing and updating) together with their location. It is just amazing to see what people around you install - and being close to ETH you see events every second.

[1] Reischach, F., Michahelles, F., Guinard, D., Adelmann, R., Fleisch, E., and Schmidt, A. 2009. An Evaluation of Product Identification Techniques for Mobile Phones. In Proceedings of INTERACT 2009, the 12th IFIP TC 13 international Conference on Human-Computer interaction: Part I (Uppsala, Sweden, August 24 - 28, 2009). LNCS, vol. 5726. Springer-Verlag, Berlin, Heidelberg, 804-816. DOI= http://dx.doi.org/10.1007/978-3-642-03655-2_88

[2] von Reischach, F., Michahelles, F., and Schmidt, A. 2009. The design space of ubiquitous product recommendation systems. In Proceedings of the 8th international Conference on Mobile and Ubiquitous Multimedia (Cambridge, United Kingdom, November 22 - 25, 2009). MUM '09. ACM, New York, NY, 1-10. DOI= http://doi.acm.org/10.1145/1658550.1658552

HotMobile09: history repeats - shopping assistance on mobile devices

Comparing prices and finding the cheapest item has been a favorite application example over the last 10 years. I have seen the idea of scanning product codes and compare them to prices in other shops (online or in the neighborhood) first demonstrated in 1999 at the HUC conference. The Pocket BargainFinder [1] was a mobile device with a barcode reader attached that you could scan books and get a online price comparison. Since then I have seen a number of examples that take this idea forward, e.g. a paper here at HotMobile [2] or the Amazon Mobile App.

The idea of making a bargain is certainly very attractive; however I think many of these applications do not take enough into account how price building works in the real world. If the consumer gets more power in comparison it can go two was: (1) shops will get more uniform in pricing or (2) shows will make it again harder to compare. The version (2) is more interesting ;-) and this can range from not allowing the use of mobile devices in the shop (what we see in some areas at the moment) to more sophisticated pricing options (e.g. prices get lowered when you buy combinations of products or when you are repeatedly in the same shop). I am really curious how this develops - would guess the system will penetrate the market over the next 3 years...

[1] Adam B. Brody and Edward J. Gottsman. Pocket BargainFinder: A Handheld Device for Augmented Commerce. First International Symposium on Handheld and Ubiquitous Computing (HUC '99), 27-29 September 1999, Karlsruhe, Germany
http://www.springerlink.com/content/jxtd2ybejypr2kfr/

[2] Linda Deng, Landon Cox. LiveCompare: Grocery Bargain Hunting Through Participatory Sensing. HotMobile 2009.