while embodiments of this invention can take many different forms , specific embodiments thereof are shown in the drawings and will be described herein in detail with the understanding that the present disclosure is to be considered as an exemplification of the principles of the invention , as well as the best mode of practicing same , and is not intended to limit the invention to the specific embodiment illustrated . in one aspect of the invention , monitoring can be implemented to ensure that personnel that need to wear a defined complement of personal protective equipment ( ppe ) can be sure they actually wearing , or carrying that complement of equipment . in another aspect of the invention , usage time for specific elements , or , pieces of ppe can be measured and tracked , and maintenance or replacement can be planned in accordance therewith . in a further aspect of the invention , the environmental conditions to which the ppe have been exposed can be logged and tracked to assist with planned maintenance / or replacement in one system which embodies the invention , radio frequency identification ( rfid ) would be incorporated into all ppe components . these rfid tags would uniquely identify the part number and serial number of each piece of personal protective equipment . in another embodiment of the invention , a ppe user communication unit could be carried by each user . this unit could be , for example , wrist - worn . in one form , the unit could include an rfid reader and an rf link to enable it to communicate with a displaced ppe control device . this device could , for example , collect ppe configuration and usage data from each ppe user communication unit . if so equipped , it could also collect environmental data to correlate with the time of use data for each ppe component . all such information could be stored in a computer readable storage memory , such as a semiconductor storage unit or a magnetic or optical mass storage unit such as a disk drive . the system could be provided with a defined set of customer applications that would run on the ppe control device ; examples might include an ability to list each ppe component , time used , time exposed to specific environmental conditions . user violations , for example , equipment removed that should not have been , could be logged and subsequently listed or printed out . automatic indications can be provided of a need for required maintenance / replacement of ppe components , based on exceeding pre - defined limits of usage or environmental exposure . such applications could be offered in the context of a pay - per - month - type service . in yet another embodiment , communications radios or cellular - type devices can be integrated with the user communication unit , or , device . global positioning circuitry can be included to be able track user location . fig1 illustrates a system 10 which embodies the present invention . system 10 includes at least one user communication unit 12 which could be worn or carried by a respective user such as a firefighter or a hazardous material control person . those of skill will understand that system 10 would usually include a plurality 12 - 1 of such units , one of which would be associated with each such individual . members of the plurality 12 - 1 are substantially identical and as a result , a discussion of unit 12 will also apply to other members of the plurality . unit 12 can be implemented with control circuits which could include one or more programmable processors , such as 12 a and associated control software 12 b . software 12 b can be stored for access and execution by processor 12 a on a local computer readable storage medium such as a semiconductor memory device or a magnetic or optical mass storage device such as a disk drive . the unit 12 can also include a display device and associated display software indicated generally at 12 c . the display device can be carried by the unit 12 or on a separate unit , for example a first responder &# 39 ; s visor as a heads up display . the unit 12 could be carried or worn , such as on a wrist , of the associated user or first responder . the unit 12 can also carry one or more receivers or transceivers , indicated generally at 12 d , such as one or more rfid signal receivers , rf transceivers of various types which could include cellular - type interfaces all without limitation . the rfid signal receivers can receive information from rfid sensors , or tags , which are associated with various elements 20 of protective gear of a type wearable or usable by the individual carrying the unit 12 . these could include without limitation , respiratory gear 20 a , eye protection devices 20 b , gloves 20 c , boots 20 d , helmet 20 e , and hearing protection devices 20 f . those of skill will understand that the enumeration of members of the plurality 20 is exemplary only and not a limitation of the invention . other elements can be added to the plurality 20 without departing from the spirit and scope of the invention . a plurality of environmental sensors 24 can also incorporate rfid - type tags and communication with the unit 12 . such sensors could include smoke , flame or gas sensors all without limitation . such sensors could be of a type which could be worn or carried by the individual associated with the unit 12 . a configuration checkpoint 28 which can include an rfid tag can be used in conjunction with the unit 12 to initiate an automatic configuration check of the user ppe configuration . unit 12 , upon sensing the rfid tag in the configuration checkpoint 28 , could initiate a check of the user ppe in the same manner as described subsequently in paragraph without requiring the user to manually press a “ check ” button . the configuration checkpoint could be placed at a location where it is expected that the user will have all the required ppe on their person , for example at a dressing room exit . system 10 can also include one or more ppe control devices indicated generally at 30 - 1 . device 30 is representative of the members of the plurality 30 - 1 and as a result a discussion of device 30 will apply to other members of the plurality 30 - 1 . device 30 can include at least one programmable processor 30 a and associated executable control software 30 b . all such software can be stored on a semiconductor , magnetic or optical computer readable storage device without limitation . unit 30 also includes a computer readable storage unit 34 , semiconductor , optical or magnetic which provides storage for lists of approved equipment , previously detected violations of approved equipment lists , one or more databases such as a time of use data base for the members of the plurality 20 as well as a time of exposure data base , relative to extreme environments or hazardous conditions of the members of the plurality 20 . device 30 can also include a display device and graphical user interface software , indicated generally at 30 c , to present situation information visually and graphically . one or more rf transceivers 30 d , some of which could be cellular - type interfaces can also be carried by device 30 to provide communication with or among members of the plurality 12 - 1 and 30 - 1 . devices such as device 30 could be carried on vehicles , or located at command posts to provide situation commanders current information as to status of the gear being carried by or worn by respective first responders addressing the current problem or condition . in addition to being able to communication with local data bases 34 , the device 30 can also communicate directly with other members of the plurality 30 - 1 as well as members of the plurality 12 - 1 . in using embodiments of the invention , once the individual has finished putting on all ppe equipment , for example from the plurality 12 , the ppe uc 12 could perform a ppe configuration check . this configuration check would compare the equipment on that individual with a pre - stored authorized ppe list . this check could be initiated manually or automatically . the ppe configuration manual check could take place once the individual believes they have the correct complement of ppe and they are displaced several feet from other individuals , at which time they could press a “ check ” button on the user communicator 12 . at this time the ppe uc , unit 12 , would interrogate the equipment and perform the configuration check . the user equipment configuration could be automatically checked either : after the individual has passed a defined physical checkpoint that has an rfid tag , for example , a dressing room exit ; or within a specified time period after an “ out of config ” notification — this time period could be defined in the authorized personal protective equipment list . if the user communicator 12 detects an unauthorized ppe configuration on an individual , it could notify the individual via either an aural alert and / or display on the device 12 . the authorized ppe list could also contain the conditions for sending “ in config ” or “ out of config ” message to the ppe control device . alert / alarms would vary based on the severity of the unauthorized configuration . the unit 12 could include a timer that would record how long each element of the personal protective equipment was in use . this usage time could be sent to the ppe control device , for example device 30 , at the end of usage for data logging . the control device 30 could enable the device user , for example a situation commander , to view the configuration state of selected individuals via communication with specific devices from the plurality 12 - 1 . in yet another aspect of the invention , the control device 30 could enable the device user to run reports to assess how much “ time of use ” each specific protective element , such as 20 a for example , had incurred . in other embodiments , the ppe control device 30 could be pre - programmed to generate maintenance alerts if “ time of use ” exceeded a pre - established value . it could also enable the device user to run reports to review equipment use history ( by ppe type and specific ppe unit ), review ppe usage by specific individuals or groups , and keep a history of “ out of config ” alerts . environmental sensors ( e . g . temp , altitude ), such as sensors 24 , could be included with rfid interfaces to enable the gathering and transmittal of environmental data . such data could be useful in establishing the time interval ( s ) that specific protective elements , from plurality 20 , were exposed to particular environmental conditions . environmental data could be sent from the members of the plurality 12 - 1 to the control device ( s ) 330 - 1 for data logging . maintenance alerts could be generated in a manner analogous to the “ time of use ” alerts described above . these maintenance alerts would indicate that specific protective elements only have a defined amount of useable life left , or had exceeded their useable life . further , the authorized ppe list could also require sensing of multiple individuals to complete the authorized configuration ; e . g . when two or more workers are required in a confined space for safety reasons . this could be accomplished by including an rfid tag in each of the members of the plurality 12 - 1 . in this embodiment , the authorized ppe list would then consist of an individual &# 39 ; s own ppe and the rfid of the co - worker ( s ). in another aspect of the invention , the user communicator ( s ) 12 - 1 could include a capability , for example , a . pushbutton , for the individual to indicate that he / she was going “ out of configuration ”; e . g . to remove equipment for a work break . the time of day and duration of the “ out of configuration ” situation could be recorded by the respective unit from the plurality 12 - 1 and transmitted to one or more control device from the plurality 30 - 1 for data logging . in yet another aspect , the configuration checkpoint could contain a user communicator that was fixed in position . this could be used as a lower cost alternative to each user carrying a user communicator . in accordance with the above embodiment , if a group of first responders always put on and take off ppe in defined locations , a communicator could be installed at configuration checkpoint , i . e . the entry / exit of this location . each individual could be configuration checked as they leave the area . out of configuration alerts would still be generated by the fixed communicator , and the time of ppe use could be measured by the configuration checkpoint communicator sensing when users return and measuring the elapsed time since they left the area . the communicator could still work as described above , including the option for manual operation ( users pushes button ) and automatic operation ( fixed communicator senses equipment passing by ). the communicator could still communicate with the control unit as described above . advantageously , the above described embodiment does not limit users to a single dressing room . users could dress in one area , then undress in another ( e . g . a cleaning area for after ppe use ). in this embodiment , all that would be needed would be a communicator at the entry / exit of each area . from the foregoing , it will be observed that numerous variations and modifications may be effected without departing from the spirit and scope of the invention . it is to be understood that no limitation with respect to the specific apparatus illustrated herein is intended or should be inferred . it is , of course , intended to cover by the appended claims all such modifications as fall within the scope of the claims .