Bijan Vakili
- Feb 21, 2015
- 4
- Joined
- Feb 21, 2015
- Messages
- 4
Question: is there a cheap (less than $100 or so) way to sense (e.g. wirelessly through some radio technology) a nearby (e.g. ideally up to 15 feet in any direction but minimum up to 3 feet) tagged (e.g. via RFID passive or other means) namecard (e.g. as in ~3.5 x ~3.5 inch plastic card)?
I cannot use bluetooth low-energy because the form-factor is too large; it cannot be attached to a namecard.
I cannot use Wifi for the same reason as the bluetooth; that is, the form factor is still too large; although companies like Navizon have made the form factor quite small, ideally I'm looking for something like passive-RFID tags that are sticker-like but can be detected from few feet or up to 15 feet away.
I cannot use RFID readers (at least not any that I found on the internet) since the cost is way too much; the readers are several hundred dollars and the set-up is quite involved; ideally, looking for a USB-enabled reader that is easy to set-up; though this is not a hard restriction, rather a preference.
I am open to custom making the module; my use case is to just test if the tagged object is in vicinity or not; a simple binary yes or no; and I'd appreciate any feedback in perhaps doing this myself (DIY) if a product doesn't already exist. So if you have ideas, please share them (though I'm more in software than hardware, I can research your ideas to implement it.)
Attached image shows the context for the use case. And the form factor of the tags are similar to RFID passive tags ( https://t.seebgroup.com/rfid-passive-tag ); and the base reader is not too expensive ( e.g. less that $100) and the tags are cheap too (less than $10).
Thank you in advance for your help.
I'm blogging about my search for this item here: https://bvakili.com/blog/-/blogs/simple-small-thin-radio-transmitter
In case I find it through other means, I will surely do my best to come back and update this post; however, that blog post will have latest information as I find them.
I cannot use bluetooth low-energy because the form-factor is too large; it cannot be attached to a namecard.
I cannot use Wifi for the same reason as the bluetooth; that is, the form factor is still too large; although companies like Navizon have made the form factor quite small, ideally I'm looking for something like passive-RFID tags that are sticker-like but can be detected from few feet or up to 15 feet away.
I cannot use RFID readers (at least not any that I found on the internet) since the cost is way too much; the readers are several hundred dollars and the set-up is quite involved; ideally, looking for a USB-enabled reader that is easy to set-up; though this is not a hard restriction, rather a preference.
I am open to custom making the module; my use case is to just test if the tagged object is in vicinity or not; a simple binary yes or no; and I'd appreciate any feedback in perhaps doing this myself (DIY) if a product doesn't already exist. So if you have ideas, please share them (though I'm more in software than hardware, I can research your ideas to implement it.)
Attached image shows the context for the use case. And the form factor of the tags are similar to RFID passive tags ( https://t.seebgroup.com/rfid-passive-tag ); and the base reader is not too expensive ( e.g. less that $100) and the tags are cheap too (less than $10).
Thank you in advance for your help.
I'm blogging about my search for this item here: https://bvakili.com/blog/-/blogs/simple-small-thin-radio-transmitter
In case I find it through other means, I will surely do my best to come back and update this post; however, that blog post will have latest information as I find them.