| ??? 11/16/04 08:17 Read: times |
#81251 - Long Range Proximity Sensing. |
Hi everybody,
I need to know, how to implement proximity sensing at a distance say 10 feet. I can't use photo bean or line of sight kinda approach. I considered RF ID tags and stuff like that, but that doesn't offer longer ranges. I need info on systems like check on Library books being taken out without issuance or stuff taken out without being thru cash counters...... I have seen they work from a consierable distance. Ideas appreciated, please. Regards Babar |
| Topic | Author | Date |
| Long Range Proximity Sensing. | 01/01/70 00:00 | |
| Oxymoron? | 01/01/70 00:00 | |
| No its not Oxymoron !! | 01/01/70 00:00 | |
| Medium proximity sensing | 01/01/70 00:00 | |
it sounds like | 01/01/70 00:00 |