is vfp compatible in programming turnstile?

[Mandy_crw]

Im just wondering ir vfp can program turnstile gate? thanks

 

[Chris Miller]

No idea, never heard someone program a turnstile gate or how a turnstile gate would work as a device of a computer system. It's plausible that today such thigns also have an interface to computers. And why not USB or ethernet or even wifi? But I never had a trunstile, sorry.

Chriss

 

[Mike Lewis]

Do you mean that literally - a turnstile that you pass through to get into a football ground or railway station? It's hard to imagine a reason to "program" that. But, if there is, it's a good chance that VFP would be up to job.

Let us know more.

Mike

__________________________________
Mike Lewis (Edinburgh, Scotland)

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[Mike Lewis]

Ah, maybe nothing to do with football or railways after all. I just found this:

Turnstile aims to help Racket programmers create typed languages. It does so with extensions of Racket’s macro-definition forms that facilitate implementation of type rules alongside normal macro code.

which in turn leads to:

Racket, the Language-Oriented Programming Language

And there's even this:

Get one-on-one Remote Desktop Support from an expert turnstile system engineer

Clearly a whole new world out there.

Mike


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Mike Lewis (Edinburgh, Scotland)

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[Chris Miller]

Nice find, Mike.

I think turnstiles could be autonomous systems, but I remember a company controlling entrance through turnstile gates with magstripe cards they created, so why shouldn't this also be hardware that has interfaces to Windows or Linux or macOS? It would also make sense to have one system that's controlling all such gates for a company area or as you say railway stations. All in all it's not that ridiculous. I do remember times when such gates to a public swimming pool had nothing to them but mechanic counters.

Chriss

 

[Mandy_crw]

Hi Mike and Chris... It so happen that i visited one school with turnstile that actually opens everytime an rfid is tap, so i did wonder and ask here if vfp could profram turnstile gate because the application i did uses also an rfid... Thank you Chriss and Mike...

 

[Mike Lewis]

Mandy, in that case, I think your question should be whether VFP can access the information from an RFID card. And I think yo already know the answer to that. The fact that the card is being used to open a turnstile is secondary.

Mike

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Mike Lewis (Edinburgh, Scotland)

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[Chris Miller]

Not so fast, Mike,

we don't know what Mandy wants to integrate into her software. As she already posted previous threads about QR and RFID scanners lets assume she alreadyy reads smartcards for authentication of a user, for example. An autonomous turnstile system might require a smartcard for itself and then they need two smartcards for turnstile.

I'm not in the mood to gues, but I simply can say I never automated or controlled any such system and Mandy, therefore contact vendors of turnstile systems and ask them.

Chriss

 

[Mike Lewis]

You might be right, Chris. If so, the first thing for Mandy to do might be find out how to programmatically control the turnstile, and then figure out how to apply that information to VFP.

Mike

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Mike Lewis (Edinburgh, Scotland)

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[tomk3]

Hello Mandy,

we do things like that, for example Gunnebo.

They usually have an "electric connector" . You can add a card to your PC, maybe USB version which you can trigger on/off in VFP via an API. We use cheap quancomm watchdog cards (with intervall 0,

http://www.quancom.de/qprod01/homed.htm

USBWDOG2 if I remember correctly), they have a good API and are easy to handle in VFP.

The electric part must be done by a specialist on that (card output port to gate input port/relay/whatever), but the guys i know say its easy (less then 15 min.)

So its 2 parts
a) your software must assure the the RFID card (or live-foto or webcam video or fingerprint or vene or iris,...) is valid.
b) if its valid you send the command "on" to the card (that will trigger whatever hardware in the gate to open it)

HTH

regards
tom

Btw. Some of the turntube ("gates") include a hidden scale to make sure that not 2 persons try to enter very close to each other as one person.