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Real Time Location Systems combine the benefits of RFID and GPS. RTLS is used to identify, track, and manage the location of what we refer to as the "4 Ps" in real time. The 4 Ps is an acronym for people, paper, products and procedures and an RTLS system can track and identify their movement as it actually occurs. ARS can implement RTLS systems using battery assisted passive, active or passive RFID technology to enable cost effective adoption. We also provide advanced location information which may include speed, direction, or spatial orientation. These additional attributes allow real time situational awareness of tagged items.

ARS implements RTLS to provide automatic identification capabilities of cost effective RFID tags with the added feature of being able to see the physical location of the tagged item on a 3D computer generated map. This capability had previously been utilized by military and government agencies but the technology is now cost effective enough for commercial and nonprofit purposes.

For RTLS to function the location of tagged items must be determined by algorithms which vary tremendously by provider. ARS is an expert in geodetic reference frames and uses this deep knowledge to perfect location by cost effectively using either one or all of the following means:

  • Triangulation

  • Trilateration

  • Dead reckoning

  • Way points

  • Presence detection

  • Choke points

Thanks to the continuous trend of increasing functionality with decreasing cost, RTLS serves in operational use cases which are applicable to almost any business.
Tasks performed by an RTLS system include:

  • Combine identity and location of any of the 4 Ps.

  • Ensures permanent visibility at all times. 

  • Supports notification of picking or placing items of interest.

  • Proves proper manning of operational areas, including any necessary certifications or endorsements which may be required for safety or other reasons.

  • Facilitates the timely and safe evacuation of endangered areas.

  • Facilitates marshalling staff and deployment of first responders.

  • Triggers event notification based on an attribute of the 4 Ps which may include a geo fence.


We have had a long term love affair with wireless and location tracking technologies. In the 1980’s our subject matter experts were busy understanding the cutting edge of RFID technologies. In engineering terms this involved evaluating transponders on railroad box cars, empirically measuring their bit error rate and its correlation to modulation schemes and velocity of movement. In non engineering terms we were performing basic science in order to understand the strengths and weaknesses of RFID and RTLS technologies.  Today we still focus on masterminding the most cost effective use of RFID and RTLS for the benefit of our clients.

We are subject matter experts in active, passive, RTLS, near field and far field RFID.



ARS helps you create more value with less work in a way that transforms your enterprise:

  • Makes life simple for your staff.

  • Generates a superior customer experience.

  • Generates significant financial benefits which typically are driven from improved utilization of capital and better operating margins to yield higher profits year after year.

We deliver these benefits by optimizing your workflow to increase productivity. Eliminating human error, reducing waste, lowering energy usage, avoiding idle resources and minimizing deviation from best practices are hallmarks of how we help you succeed in a competitive global market.