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Help! I need dots instead of numbers

I’m not sure if this would be a javascript but any help would be much appreciated. I’m currently finishing up a form that has credit card transactions. I am wondering if I need a javascript in order to make dots appear when a person puts in their credit card number. Thank you so much!

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JavaScript

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@russellNov 19.2004 — no. use <input type="password">
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@Zoe648authorNov 19.2004 — Thank you!!
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@JuuitchanNov 19.2004 — [B][COLOR=red]OH CHRIST NO[/COLOR][/B]

Not unless you make sure that the form is encrypted, because otherwise it's easy for hackers to snoop and steal credit card numbers. Or so I hear.
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@HaganeNoKokoroNov 20.2004 — As I understand the problems with sending unencrypted form data:

HTTP GET method: Least secure. The data is passed as part of the URL, and therefore will exist persistantly in the logfiles of every server it passes through. Anyone capable of viewing the logfiles, good or evil, will see the information.

HTTP POST method: Not much better. The data is passed in the HTTP request body, and will probably not be logged by servers. However, it would still be damn easy for a malicious user to store all POSTDATA that passes through his machine and look through it for credit card numbers, etc.

It makes no difference whether or not the form uses an <input type="password"> except that people pysically looking over your shoulder will not be able to read the information off your screen. I would assume (or hope) that Zoe already has some form of encryption in place (or at least planned) to counter these problems, and merely wanted to know how to hide the information from prying eyes looking at the user's monitor.
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