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'''Local Shared Object (LSO)''' is a [[HTTP cookie|cookie]]-like data entity used by [[Adobe Flash Player]].
The player allows web content to read and write LSO data to the computer's local drive on a per-___domain basis<ref name="adobe_sec_wp">{{web cite| url = http://download.macromedia.com/pub/flash/whitepapers/security.pdf | title = Macromedia Flash MX Security| publisher=[[Adobe_Systems|Adobe]] | date=2002-03-01 | accessdate=2007-12-05}}</ref>. The Local Shared Objects<ref>{{cite web| url=http://www.adobe.com/products/flashplayer/articles/lso/ | title=What are local shared objects?| accessdate=2007-12-05| publisher=[[Adobe_Systems|Adobe]]}}</ref> are available in Flash Players starting from version 6. This technology permits web sites to preserve session state and record user data and behavior<ref name="epic_lso">{{cite web| url=http://www.epic.org/privacy/cookies/flash.html| title=Local Shared Objects -Flash Cookies| publisher=Electronic Privacy Information Center| date=2005-07-21| accessdate=2007-12-05 | publisher=[[Electronic_Privacy_Information_Center|Electronic Privacy Information Center]]}}</ref>.
== Storage policy ==
By default, any ___domain containing Flash applications, can store up to 100kb of data to user's hard drive (web browser cookies have a 4kb limit)<ref name="adobe_sec_wp"/>. The possible storage sizes are 0kb, 10kb, 100kb, 1Mb, 10Mb and Unlimited<ref name="adobe_settings_mngr"/>.
If the current limit is exceeded, the user is shown a dialog requesting storage space of the next size. The user can manually override the amount by clicking the Flash application with right mouse button and selecting Settings - however, this applies only to the ___domain of the Flash movie. If the selected setting is smaller than the current data size, the data is deleted.
The global LSO settings can be amended at Adobe's web site using a manager tool<ref name="adobe_settings_mngr">{{cite web| url=http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager.html| title=Global settings manager| publisher=[[Adobe_Systems|Adobe]] |accessdate=2007-12-05}}</ref><ref>{{cite web| url=http://www.adobe.com/go/52697ee8| title=TechNote: How to manage and delete local shared objects?| publisher=[[Adobe_Systems|Adobe]] |accessdate=2007-12-05}}</ref>, itself using the Flash technology. Using the manager, the LSO's can be turned off completely.
== Storage ___location ==
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