BBC Teach: How to Think like a Computer
A teenage programmer tests how different types of algorithms can be used to speed up searching her massive music collection.
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| Cookie | Duration | Description |
|---|---|---|
| ab._gd | - | Temporarily created (and then deleted) to determine the root-level cookie domain, which allows the SDK to work properly across sub-domains. |
| ab.optOut | 1 Year | Used to store a user’s opt-out preference when disableSDK is called |
| ab.storage.deviceId.[key] | 1 Year | Out-of-the-box randomly generated string used to identify anonymous users, and to differentiate users’ devices and enables device-based messaging. |
| ab.storage.sessionId.[key] | 1 Year | Out-of-the-box randomly generated string used to determine whether the user is starting a new or existing session to sync messages and calculate session analytics. |
| ab.storage.userId.[key] | 1 Year | Used to determine whether the currently logged-in user has changed and to associate events with the current user. |
| cookielawinfo-checkbox-analytics | 11 months | This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Analytics". |
| cookielawinfo-checkbox-functional | 11 months | The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". |
| cookielawinfo-checkbox-necessary | 11 months | This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary". |
| cookielawinfo-checkbox-others | 11 months | This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. |
| cookielawinfo-checkbox-performance | 11 months | This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Performance". |
| viewed_cookie_policy | 11 months | The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It does not store any personal data. |
| Cookie | Duration | Description |
|---|---|---|
| wd | 1 Week | To read screen resolution |
| Cookie | Duration | Description |
|---|---|---|
| __Secure-3PAPISID | 2 Years | Builds a profile of website visitor interests to show relevant and personalized ads through retargeting. |
| __Secure-3PSID | 2 Years | Builds a profile of website visitor interests to show relevant and personalized ads through retargeting. |
| __Secure-3PSIDCC | 2 Years | Targeting cookie. Used by for targeting purposes to build a profile of the website visitor's interests in order to show relevant & personalised Google advertising |
| _fbp | 3 Months | Store and track visitors across websites |
| 1P_JAR | 1 Month | Based on recent searches and previous interactions, custom ads are shown on Google sites. |
| APISID | 2 Years | Personalizes Google ads on websites based on recent searches and interactions. |
| datr | 2 Years | Fraud Prevention |
| fr | 3 Months | Provide ad delivery or retargeting |
| HSID | 2 Years | Security cookie to confirm visitor authenticity, prevent fraudulent use of login data and protect user data from unauthorized access. |
| NID | 6 months | Stores visitors’ preferences and personalizes ads on Google websites based on recent searches and interactions. |
| SAPISID | Persistent | Google collects visitor information for videos hosted by YouTube. |
| SID | 2 Years | Security cookie to confirm visitor authenticity, prevent fraudulent use of login data and protect visitor data from unauthorized access. |
| SIDCC | 3 months | Security cookie to confirm visitor authenticity, prevent fraudulent use of login data and protect visitor data from unauthorized access. |
| Cookie | Type | Duration | Description |
|---|---|---|---|
| _ga | third party | 2 Years | To store and count pageviews |
| _gat | third party | 1 Minute | Read and filter requests from bots |
| _gid | third party | 1 Day | To store and count pageviews |
| _vis_opt_exp_{CAMPAIGNID}_combi | third party | 100 days | This cookie is created when a visitor is chosen for a particular variation for a test. This cookie makes sure that visitors see the same variation when they revisit the page in the future. Here the Control has a value of 1, Variation #1 has a value of 2, Variation #2 has a value of 3, and so on |
| _vis_opt_exp_{CAMPAIGNID}_exclude | third party | 100 Days | This cookie is created when a user has been excluded from a Test Campaign due to the traffic percentage specifications. The value is always 1 |
| _vis_opt_exp_{CAMPAIGNID}_goal_{GOALID} | third party | 100 days | This cookie is created when a campaign goal is triggered. This cookie, when created, will always have a value of 1 |
| _vis_opt_exp_{CAMPAIGNID}_split | third party | 100 Days | This cookie is created when one of the variations is chosen for the visitor, but the visitor is not yet redirected to the variation page. It exists so that VWO can verify that the variation page corresponds to the chosen variation after landing on the page. The value is >=2 (as 1 corresponds to Control and it’s not created in case the Control is chosen) |
| _vis_opt_out | third party | 10 Years | This cookie indicates that the visitor should not be made part of any campaign. Its value is 1 |
| _vis_opt_s | third party | 100 days | This cookie tracks session created for a visitor, i.e., the number of times the browser was closed and reopened. The value is >=1, followed by a pipe sign. *For example,* the value of 2 indicates that the visitor restarted the browser once while 3 means twice |
| _vis_opt_test_cookie | session | Session | This cookie is created to detect if the cookies are enabled on the visitor’s browser or not. It also helps in tracking the number of browser sessions a visitor has gone through. The value of this cookie is always 1 |
| _vwo_ds | third party | 2 Months | This cookie stores persistent user-level data for VWO Insights |
| _vwo_sn | persistent | 30 Minutes | This cookie stores session-level information |
| _vwo_uuid_v2 | third party | 366 Days | This cookie calculates unique traffic on a website |
| SAPISID | third party | 2 Years | Google collects visitor information for videos hosted by YouTube. |
| SSID | third party | 2 Years | Google collects visitor information for videos hosted by YouTube on maps integrated with Google Maps. |
| Cookie | Duration | Description |
|---|---|---|
| dpr | 1 Week | |
| IDE | Persistent |
