ArcStream is a local trading platform that aims to improve upon communication systems of existing sites like Gumtree and eBay. It incorporates an instant messaging client to allow direct contact between buyers and sellers. Using the GeoNames API and postcode data, ArcStream can filter listings by location to display only items within a user's area. This simplifies the local trading process by automating location searches and facilitating conversations through its built-in messaging.

1. ArcStream
Brought to you by ArcMedia

2. Why did we make ArcSteam?
• Gumtree and eBay are great solutions for trading online and have
both become very popular in recent years.
• However, ArcStream provides much improvement specifically to the
communication system which is difficult to use on Gumtree and
eBay.
• With ArcStream we have redesigned communication by combining
an instant messaging application with the trading functionality of
these websites.
• We also felt that the localisation could be automated with open data,
as opposed to searching through localised web pages on sites like
Gumtree.

3. What is ArcStream?
• We are aiming to make local trade simple.
• Via a built-in instant messaging client, we allow the user
to contact sellers directly.
• Using the GeoNames API, the user can set a range that
filters items based on location.
• Selling items is quick and easy, supply us some details
and a price and we do the rest.

4. GeoNames API
• GeoNames is an open data set that offers access to
postcode data from across the world
• We have incorporated their Java API into our project to
allow us to filter the items displayed in the user’s
ArcStream based on location
• Using the user’s location and postcode data for the
users in our database, we can then use the
GeoNames API to filter visible items to those in the
user’s area.

5. GeonamesUser
Sign in
Returns co-ords of postcode
Requests nearby postcodes
Returns request
Searches using returned results

6. User Interface

7. Instant Messaging Built-In
• When you select an item to buy, ArcStream will take the
effort out of finding contact details, using in-app Instant
Messaging.
• Sellers keep track of the items they are selling using a
tabular layout
• Each item you’re selling has an independent set of tabs;
allowing you to keep track of who’s interested in each item.
• ArcStream is about simplicity for trading locally; taking the
effort out of contacting sellers and the way we arrange
conversations does exactly that.

8. Buying and Selling with ArcStream
• It’s quick and easy to buy and sell items on ArcStream
• To sell, all you need is a
object name and a price. The
Instant Messaging
functionality allows buyers to
ask for details, so there’s no
need to write a profile on
what you’re selling.
• If someone wants your stuff…
they will contact you!
• To buy, you simply log in and a
pane of items is displayed to
you. Our Instant Messaging
client allows you to
communicate with the seller. So
there’s no need to read profiles
or find contact details.
• Just find some stuff and get in
contact!

9. Questions?