Do Not Track

The Do Not Track (DNT) header is the proposed HTTP header field DNT that requests that a web application disable either its tracking or cross-site user tracking (the ambiguity remains unresolved) of an individual user. The Do Not Track header was originally proposed in 2009 by researchers Christopher Soghoian, Sid Stamm, and Dan Kaminsky. Efforts to standardize Do Not Track by the W3C in the Tracking Preference Expression (DNT) Working Group are currently advanced at Candidate Recommendation status.

In December 2010, Microsoft announced support for the DNT mechanism in its Internet Explorer 9 web browser. Mozilla's Firefox became the first browser to implement the feature, while Internet Explorer, Apple's Safari,Opera and Google Chrome all later added support.

The header field name is DNT and it currently accepts three values: 1 in case the user does not want to be tracked (opt out), 0 in case the user consents to being tracked (opt in), or null (no header sent) if the user has not expressed a preference. The default behavior required by the standard is not to send the header unless the user enables the setting via their browser or their choice is implied by use of that specific browser.

Do Not Track (documentary)

Do Not Track (French: Traque interdite) is a 2015 online interactive documentary series about internet privacy, conceived and directed by Brett Gaylor. The series, which combines short videos and interactive elements, seeks to educate people about who may be tracking them online and the amount of private information that may be extrapolated from their Internet activities. It interviews experts and activists such as danah boyd, Ethan Zuckerman, Kate Crawford, Cory Doctorow and Alicia Garza about how personal online data is being collected and used, and allows users see in real-time how their own personal data is being tracked.

This web documentary is a coproduction of the National Film Board of Canada, Arte, Bayerischer Rundfunk and Upian. Its first two episodes were launched on April 14, to be followed by five more installments released once every two weeks. Do Not Track was also presented as an interactive installation in the Storyscapes section of the Tribeca Film Festival.

Don't

Don't may refer to:

Films

Songs

Other uses

See also

No symbol

The no symbol (also known as a prohibition sign, no sign, circle-backslash symbol, nay, interdictory circle, or universal no) is a circle with a diagonal line through it (running from top left to bottom right), surrounding a pictogram used to indicate something is not permitted. The no symbol is generally colored red, but is sometimes another color, typically black.

The Unicode code point for the prohibition sign (also called the no symbol) is U+20E0;, Combining Enclosing Circle Backslash (   ⃠   ). It is a combining character, which means that it appears on top of the character before it, so putting d⃠ will show   d⃠.   (Note: This will appear only if the character exists in an available font.) It also appears in the Webdings and Wingdings 2 fonts.

There is also a prohibition sign emoji located at U+1F6AB NO ENTRY SIGN (🚫), which does not combine with anything.

According to the ISO standard (and also under a UK Statutory Instrument), the red area must take up at least 35% of the total area of the sign within the outer circumference of the "prohibition sign". So 35% of everything within the outer edge of the "no symbol" must be the symbol itself. Additionally, for printed signs under the UK rules, the width of a "no symbol" is set at 80% the height of the area it is printed to.