redirecting wap without distrupting search engines

using asp to detect a wap device...

it has been suggested that one can use the http_user_agent variable to determine if someone has reached a web site with a wap device.

if the results for http_user_agent contains 'mozilla' then its not a wap device.

first of all...can anyone confirm this method.

secondly...will google or any other search engines show 'mozilla' in their results for http_user_agent?

one of my google hits shows this for google:
Googlebot/2.1 (+http://www.googlebot.com/bot.html)


another method suggested is to check for the http_accept variable.

...if 'text/vnd.wap.wml' is in the list...then its a wap device.

which of these methods is the best?
is there another method?
my main concern is to prevent redirecting search engine spiders that reach my site. i only wish to redirect wap devices to a different version.
any comments are appreciated.

thanks!

Hi,

I would definitely go for the http_accept - variant.
The user - agent variant has the following flaws:

* some spiders might not reveal their true identity but rather mask as a "normal" browser, possibly to check if you're cloaking

* There might be browsers that do not have "Mozilla" in their User-Agent-Value

Regards
Ralph

yep....
thats my gut feeling.

i have been watching the http_accept results....
and i dont see any spiders showing up with 'text/vnd.wap.wml'.
so it seems safe to use.

thanks. :-D