Device detection, the User Agent and beyond Barcelona, 18 June 2009 Andrea Trasatti Director of Technology Strategy

Andrea Trasatti

Director of Technology Strategy

Device detection The User-Agent string approach: left-to-right search Levenshtein distance regular expressions/keywords Very simple API, i.e. fast implementation Going past the User-Agent string, using more HTTP request headers UAProf URL So why not just UAProf URL?

The User-Agent string approach:

left-to-right search

Levenshtein distance

regular expressions/keywords

New DeviceAtlas API Use of Evidence (i.e. full HTTP request headers) DeliveryContext object Open and extensible W3C DDR Simple API compliant dotMobi extension: Cache provider

Use of Evidence (i.e. full HTTP request headers)

DeliveryContext object

Open and extensible

W3C DDR Simple API compliant

dotMobi extension: Cache provider

Use Case 1: Web Application

Use Case 2: Log Analysis

Normal API deployment

Http and Application Server Extensions

Detection in the cloud The greatest experts in “clouds” live in Ireland Image by etrusia_uk, http://www.flickr.com/photos/e_phots/2642111978/

No setup No update hassle Manage your local cache if you want to save resources Detection in the cloud $ curl -d key=12345 -d User-Agent=NokiaN73 -d X-Wap-Profile=http://nds1.nokia.com/profiles/N73.rdf http://deviceatlas.appspot.com/query

No setup

No update hassle

Manage your local cache if you want to save resources

The future of adaptation Integration with frameworks such as ASP.NET and JSF Automatic image resizing Smart forms using Javascript and XHR Smart styling (selection of CSS, use of simple or advanced features, interaction with DOM and Javascript)

Integration with frameworks such as ASP.NET and JSF

Automatic image resizing

Smart forms using Javascript and XHR

Smart styling (selection of CSS, use of simple or advanced features, interaction with DOM and Javascript)

References Levenshtein distance, http://en.wikipedia.org/wiki/Levenshtein_distance DeviceAtlas, http://deviceatlas.com mobiForge, http://mobiforge.com W3C DDR Simple API recommendation, http://www.w3.org/TR/DDR-Simple-API/ DeviceAtlas “in the cloud”, http://deviceatlas.appspot.com/query

Levenshtein distance, http://en.wikipedia.org/wiki/Levenshtein_distance

DeviceAtlas, http://deviceatlas.com

mobiForge, http://mobiforge.com

W3C DDR Simple API recommendation, http://www.w3.org/TR/DDR-Simple-API/

DeviceAtlas “in the cloud”, http://deviceatlas.appspot.com/query

Thank you Andrea Trasatti Director of Technology Strategy [email_address] @AndreaTrasatti

Andrea Trasatti

Director of Technology Strategy

[email_address]

@AndreaTrasatti