Skip to main content

Captcha -- The Word Verification Technique

Browsing through an article on PlanetRDF.com made me learn a new geek word. I just know that there is also a proper word for the "word verification" techniques to prevent automated operation of Web software by computer codes (see image below).



As pointed by the Planet RDF article, according to Wikipedia, this proper word is "captcha", an acronym for "completely automated public turing test to tell computers and humans apart."

Captcha is a type of challenge-response test used in computing to determine whether or not the user is human, a common type of which requires that the user type the letters of a distorted and/or obscured sequence of letters or digits that appears on the screen.

Keywords:

Comments

Popular posts from this blog

Padonc's "Bought from Mae Hong Son" T-shirts -- Interesting Souvenir from Mae Hong Son

Padonc's "Bought from Mae Hong Son" T-shirts -- Interesting Souvenir from Mae Hong Son The "I love New York" t-shirt and the series of souvenir was one of my impressive memory from my previous trips to New York City. I got this same kind of impression when I was browsing by the shops by the Jong Kam Walking Street in the city of Mae Hong Son in the second night of the trip. I didn't look at the seller when I caught the sight of these T-shirts. The seller greeted me and, surprisingly, she was P'Kwan, my senior alumni from Chulalongkorn University, who lives in Mae Hong Son and gave me a warm welcome when my family and I went for a dinner at Fern Restaurant in Mae Hong Son town the other night. Note: Pi or P' (its abbreviation) is a Thai word to call an elder sister or brother. Here are the pictures: P'Kwan and Her Shop The T-shirts P'Kwan and the Shop P'Kay, P'Kwan's Husband, at Another Shop Keywords: trips , mae-hong-son , thai

Tip: Converting a CSV File into XML by Excel

I came across a problem to convert a historical data in comma-separated format (CSV) into a modern & more useful XML format. There are many ways to do such conversion. The most obvious one is to do it programmatically by writing a program to read CSV data and exporting it to an XML file by means of the Simple API for XML (SAX) or the Document Object Model (DOM) libraries. But I was too lazy to do it. I knew that Microsoft Excel 2003 supports exporting worksheets into XML data. I tried it out but found that it is not that simple -- we have to define an XML schema and bind each element to each column of the worksheet. So I went on researching. Finally, I found a very useful tool on MSDN: Excel 2003 XML Tools Add-in Version 1.1 ( download ). The Excel Add-in's "XML Tools -> Convert a Range to an XML List" menu command allows us to simply select a range in a worksheet (with or without first row as column names) -- with the advanced options to specify the XML root

It’s been eight years and here comes COVID-19 in early 2020

This blog was last posted in 2008 before Facebook and LinkedIn went mainstream. I have since then socialized and posted a lot on Facebook and LinkedIn. During the global COVID-19 crisis in early 2020 people dramatically change the way they live and work since they day I last posted on this blog. They stay a lot at home during the great lockdown to prevent the spreading of the coronavirus. Here is a summary of my online presence: Facebook: http://fb.com/drthitiv LinkedIn: http://linkedin.com/in/thitiv LINE: http://line.thiti.it Bangkok, THAILAND April 22, 2020