This tool uses Twitter search of the public timeline.

Re-Tweeted messages are selected and highlighted.

Additional messages can be shared using “channel mode”.

public (default) mode

  • Retweeted messages (within the results of search query) are selected and shown as “white messages.”
    • Twitter official RT is not supported.
    • If the query of user is “#abc”, Twitter search for “#abc RT” is executed.
    • Duplicated messages (or, similar message to another) are omitted. DP (dynamic programming) matching is used for this process.
    • Citation parts, URLs, hashtags, account names are shown in small charactors.
  • Other messages are shown as “gray messages.”
  • You can use “create channel for (query)”.

channel mode

* After you created a channel, “channel id (number)” and “pass (random charactors)” are generated. * Other users can join the channel, if they know the channel ID and pass. * In channel mode, you can use “post messages”. * Posted messages are shown as “yellow message”. They are shared only with the users of the same channel. * Use “leave channel” for back to default mode. * Screen is reloaded in every 10 seconds. This can be disabled with “auto update” checkbox.

security and privacy

  • This is experimental system. Please do not use this system for security-sensitive information.
  • Access logs from UserAgent are recorded for research and development of the system.
  • Currently, we do not use the Twitter login authorization. This system does not use Twitter OAuth. We only use search API of public timeline.


  • 2010-09-16: Preview version released.
  • 2010-10-04: First version (channel mode implemented) released.
  • 2010-11-12: “channel mode” removed. default search is “ustre.am”. URLs are hyperlinked.


  • “rcpt” is named for “Re-CaPTioning”. The concept is that the “re-tweet” can be used for “captioning” of real-time event.
  • PHP and mySQL is used for implementation.
  • Contact: nishimotz [atmark] gmail.com
  • Twitter: @nishimotz (en) / @nishimtz (ja)
project/rcptcc.txt · Last modified: 2010/11/12 22:26 by nishimotz
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