Not a tip but a question...(not a request either)

Is it possible to make a script in a wearable object, that would give someone access to a sim for a limited number of hours. Instead of adding to land. Don't ask me why I am not supposed to add to land (I honestly wish I knew why as it seems soo much easier)... but they want this done this way. Like sending an invitation to an avatar to visit for a few hours.

Is something like this possible? I am assuming it would have to do with a script registering the avatar key with the security on the island. but not sure if that is possible from a worn object.

Any advice?

I almost don't want to say this as I hate "security orbs" with a vengeance... but you could use a modified security orb that talks to an attachment that provides exemption for a proscribed period. Obviously, you'll have individuals who will attempt to fake that exemption message so you'll have to devise a secure communication scheme.

You don't even need to make them wear a special prim. My thoughts go like this:

When the person enters the sim they are told that have access for X amount of time, after which they will be ejected. They're name is then added to a central "authorized avatar" list stored on a "main frame" prim.

A network of invisible prims are set up around the sim to give sensor coverage to all important areas (or the whole thing if you are REALLY serious about this). Once a minute (which should be plenty) the prims do a sensor sweep, if an avatar is detected it will query the main frame to see if their name is still on the list. If it is nothing happens. If it's not, the avatar is ejected.

The main frame will automatically remover the avatar's name from the auth list after the prescribed amount of time expires. Probably best if it gives a five minute and a one minute warning (with the possibility to buy more time maybe?).

No need for the avatar to wear a special prim, no worries about them simply removing that prim to avoid being ejected.

assuming you can talk them into it, a wearable prim (or any prim really) could make use of the land access controls on an automated basis... they may just be thinking they don't want to do it manually. a prim in the server could monitor time, send imminent 'timeout' warnings, etc...