a first embodiment of the invention will now be described with reference to fig1 - 4 . in fig1 reference numeral 10 generally indicates an article of merchandise ( in particular , an electronic consumer appliance ) having an integrated magnetomechanical eas marker portion 12 . as best seen in fig2 the article 10 includes a substantially rigid housing 14 in the shape of a box defining a cavity 16 which contains functional components of the article 10 such as a circuit board 18 . the housing is formed of a non - magnetic material such as molded plastic . another , smaller cavity 20 is integrally formed in a top wall 22 of the housing 14 . as seen from fig2 - 4 , the cavity 20 is shaped and sized to accommodate therein a magnetostrictive element 24 . the element 24 may be of the same shape and size as magnetostrictive elements used in conventional stand - alone magnetomechanical markers and may be formed of a conventional material such as the amorphous metal alloy known as metglas ® 2826 mb or any other suitable magnetostrictive material . as somewhat schematically illustrated in fig3 after the element 24 is placed in the cavity 20 , the cavity is closed by affixing a sealing member 26 on the outer surface of the wall 22 in a position such that the sealing member 26 overlies the opening of the cavity 20 . like the housing 14 , the sealing member 26 should be non - metallic and may be formed , for example , of plastic or paper . the assembly of the integrated marker portion 12 of the article 10 is completed by mounting a biasing element 28 in a position adjacent to the cavity 20 and the magnetostrictive element 24 housed in the cavity 20 . for example , as suggested by fig3 the biasing element 28 may be mounted ( by an adhesive , for example ) to an outer surface of the sealing member 26 . this may be done either before or after the sealing member is affixed to wall 22 of housing 14 . fig2 - 4 show the biasing element 28 in the form of a strip of magnetic material which has a higher coercivity than the magnetostrictive element 24 , and which is of the type provided in conventional free - standing magnetomechanical markers . however , according to an alternative embodiment of the invention , the biasing element 28 may be formed as a layer of magnetic ink , printed on the outer surface of the sealing member 26 or at another suitable location adjacent to the cavity 20 . alternatively , the biasing element 28 may be formed as a suitable layer of material provided by processes such as vapor deposition , electro - deposition or sputtering . again , the layer constituting the biasing element 28 may be formed on the sealing member 26 either before or after attachment of the sealing member 26 to the wall 22 of housing 14 . as is the case with free - standing markers , magnetization of the biasing element 28 to provide the necessary biasing field may be performed either before or after assembly of the components 24 and 28 into the integrated marker portion 12 of the article 10 . fig4 a - 4d illustrate in flow - diagram form processes that may be used in accordance with the invention to form the biasing element 28 on the sealing member 26 . according to the process illustrated in fig4 a , the sealing member 28 is first attached to the housing 14 so as to close the cavity 20 ( step 50 ). then a layer of magnetic ink is printed on the outer surface of the sealing member 26 ( step 52 ) and the layer of magnetic ink is magnetized ( step 54 ). according to the process illustrated in fig4 b , a layer of magnetic material is formed on a surface of the sealing member 26 by vapor deposition ( step 56 ), and then the sealing member 26 is applied to the housing 14 to close the cavity 20 ( step 58 ). then the layer of magnetic material is magnetized ( step 60 ). according to the process illustrated in fig4 c , a layer of magnetic material is formed on a surface of the sealing member 26 by electro - deposition ( step 62 ), and then the sealing member 26 is attached to the housing 14 so as to close the cavity 20 ( step 64 ). finally , the layer of magnetic material is magnetized ( step 66 ). according to the process illustrated in fig4 d , a layer of magnetic material is formed on a surface of sealing member 26 by sputtering ( step 68 ), and then the sealing member 26 is attached to the housing 14 so as to close the cavity 20 ( step 70 ). finally , the layer of magnetic material is magnetized ( step 72 ). it will be recognized that the sealing member 26 , in addition to retaining the magnetostrictive element 24 in the cavity 20 , also serves as a spacer between the magnetostrictive element 24 and the biasing element 28 , so that the biasing element 28 , when magnetized , does not &# 34 ; clamp &# 34 ; the magnetostrictive element 24 and thereby prevent the magnetostrictive element 24 from exhibiting the desired mechanical resonance upon exposure to an interrogation field . fig4 illustrates the integrated marker portion 12 in its final assembled form . it should be noted that in the drawing the thickness of the elements 24 , 26 , and 28 has been exaggerated for clarity of illustration . in actual practice , the magnetostrictive element 24 , the sealing member 26 and the biasing element 28 may all be made quite thin , particularly if the biasing element is formed of magnetic ink , so that the integrated marker portion 12 is nearly flush with the upper surface of the housing 14 . the cavity 20 is dimensioned so that the magnetostrictive element 28 can exhibit mechanical resonance upon exposure to a suitable interrogation field without being constrained by the walls of the cavity 20 . it will be appreciated that an integrated marker portion 12 as illustrated in fig3 and 4 can be incorporated in many types of articles of merchandise besides electronic appliances . it is also possible to integrate the marker portion 12 within a structural element of an article of merchandise other than the housing of the article . by way of example , an integrated marker portion could be included in the handle of a hand tool , in the protective case of a recording medium such as a compact disk or a magnetic tape , or in the carrying strap of an article of luggage . activation and deactivation of the integrated marker portion 12 can be performed according to conventional techniques . for example , deactivation may be carried out by placing the article 10 , or at least the integrated marker portion 12 thereof , within a magnetic field provided for degaussing the biasing element 28 . according to other embodiments of the invention , one or more integrated marker portions 12 may be provided in packing materials provided for protecting an article of merchandise from damage during shipment . for example , as shown in fig5 an integrated marker portion 12 is provided in a packing fixture 30 , in the form of a molded plastic foam block which is used in cooperation with a second foam block packing fixture 35 to securely nest an article of merchandise 32 in the interior 33 of a packing carton 34 . as best seen in fig6 the packing fixture 30 includes an inner portion 36 which is formed to fit the contour of the article 32 and an outer portion 38 formed to fit the carton 34 . the integrated marker portion 12 of the packing fixture 30 may be the same as the marker portion illustrated in fig4 and 5 and discussed above . alternatively , for example , parallel deep narrow slots may be provided extending into the body of packing fixture 30 for accommodating therein the magnetostrictive element 24 and the biasing element 28 . it should be understood that the size and shape of the packing fixture 30 having the integrated magnetomechanical eas marker is subject to variation depending on the respective sizes and shapes of the packing carton and the article of merchandise to be nested in the carton . for example , rather than using a pair of cooperating fixtures as shown in fig5 there may be provided only a single fixture 30 ( with an integrated marker portion 12 ), shaped to have the article of merchandise nested in the fixture 30 . it should also be recognized that the fixture 30 may be formed of other suitable materials , such as cardboard , instead of plastic foam . according to another embodiment of the invention , as shown in fig7 a packing carton 34 &# 39 ; is provided with an integrated marker portion 12 like that shown in fig3 and 4 . like the carton 34 of fig5 it will be recognized that the carton 34 &# 39 ; includes walls which define a large cavity 33 ( fig5 not shown in fig7 ), for enclosing an article of merchandise 32 for shipment within the carton 34 &# 39 ;. as before , the integrated marker portion 12 includes a small cavity 20 ( fig3 and 4 , not shown in fig7 ) shaped and sized to accommodate a magnetostrictive element 24 without constraining mechanical resonance of the magnetostrictive element . it is to be appreciated that integration of magnetostrictive eas marker elements into a product or product packaging , as disclosed above , relieves the retailer from the labor - intensive task of applying stand - alone markers to an inventory of goods , and that the formation of the cavity for the magnetostrictive element and the installation of the marker components in the product or product wrapping can be efficiently incorporated in the manufacturing process . fig8 illustrates a magnetomechanical system used for detecting unauthorized passage through an interrogation zone of an article of merchandise that has an integrated marker portion or that is wrapped in a wrapping structure or with a packing fixture having an integrated marker portion . the system shown in fig8 includes a synchronizing circuit 200 which controls the operation of an energizing circuit 201 and a receiving circuit 202 . the synchronizing circuit 200 sends a synchronizing gate pulse to the energizing circuit 201 , and the synchronizing gate pulse activates the energizing circuit 201 . upon being activated , the energizing circuit 201 generates and sends an interrogation signal to interrogating coil 206 for the duration of the synchronizing pulse . in response to the interrogation signal , the interrogating coil 206 generates an interrogating magnetic field , which , in turn , excites the integrated marker portion 12 of the article of merchandise 10 into mechanical resonance . upon completion of the pulsed interrogating signal , the synchronizing signal 200 sends a gate pulse to the receiver circuit 202 , and the latter gate pulse activates the circuit 202 . during the period that the circuit 202 is activated , and if an active marker is present in the interrogating magnetic field , such marker will generate in the receiver coil 207 , a signal at the frequency of mechanical resonance of the marker . this signal is sensed by the receiver 202 , which responds to the sensed signal by generating a signal to an indicator 203 to generate an alarm or the like . in short , the receiver circuit 202 is synchronized with the energizing circuit 201 so that the receiver circuit 202 is only active during quiet periods between the pulses of the pulsed interrogation field . although fig8 illustrates use of the integrated article of merchandise and eas marker in connection with a pulsed - interrogation type of magnetomechanical eas system , it is also contemplated to use such integrated article of merchandise and marker with a swept - frequency magnetomechanical system like that disclosed in the above - referenced u . s . pat . no . 4 , 510 , 489 , or any other system designed to operate with magnetomechanical markers . another embodiment of the invention provides an integrated article of merchandise and eas marker suitable for surveillance by a harmonic eas system . this embodiment may be like the embodiment described above in connection with fig1 - 4 with the following differences : ( a ) no biasing element 28 needs to be provided , and ( b ) the magnetostrictive element 24 is replaced by a magnetic wire or strip of a type disclosed in the humphrey u . s . pat . no . 4 , 660 , 025 or the humphrey et al . u . s . pat . no . 4 , 980 , 670 patents referred to above . also , the cavity 20 in this embodiment is shaped and sized so that the magnetic wire or strip is permitted to move within the cavity . it is to be noted that such a cavity serves to prevent or limit transfer of mechanical stress from the housing 14 to the magnetic wire or strip . accordingly , the magnetic wire or strip does not suffer the degradation of its magnetic properties that would occur if the wire or strip were simply embedded in the housing 14 . it will be recognized that variations of this embodiment may be provided in which the magnetic wire or strip is integrated with a packing fixture like that of fig5 and 6 , or in a packing carton like that shown in fig7 . another embodiment of the invention is illustrated in fig9 . according to this embodiment , a magnetic wire 40 ( of the humphrey or humphrey et al . type , for example ) is directly embedded in the housing 14 &# 39 ; of an article 10 &# 39 ;. for example , the housing 14 &# 39 ; may be of plastic and formed by molding around the wire 40 . a lubricant coating 42 , including silicone for example , is applied to the wire 40 before it is embedded in the housing 14 &# 39 ;. the coating 42 serves to eliminate or limit mechanical stress that would otherwise be applied to the wire 42 during the process of molding the housing 14 &# 39 ;. again , this embodiment may be varied by embedding a lubricant - coated wire in a packing fixture or shipping carton , for example . up to this point there have been described theft - deterrence or theft - detection uses of articles of merchandise , wrapping structures , and so forth having eas components integrated therein . however , other uses of such items are also contemplated . for example , the presence of an integrated marker portion or an embedded marker element in an article of merchandise may be detected to verify the authenticity of the article of merchandise . more specifically , it is not uncommon for certain kinds of merchandise , such as compact discs or magnetic tapes , to be &# 34 ; pirated ,&# 34 ; i . e ., duplicated by unauthorized persons and packaged so as to resemble authorized copies of musical or audio - visual works . the pirated cds or tapes may then be distributed through normal retail channels , often without the knowledge of legitimate retail establishments that would not knowingly sell pirated goods . in order to prevent or deter distribution of pirated goods through legitimate channels , sales of magnetic and magnetomechanical eas components can be limited to legitimate manufacturers who embed or incorporate the components in , e . g ., the protective cases of cds or magnetic tapes . retailers can then verify the authenticity of the goods by detecting the presence of the integrated or embedded eas components in the goods . for this purpose , a suitable detection system , similar to a conventional eas system , may be provided at the stock room or on the shipping dock . alternatively , the presence of the eas components may simply be detected by visual inspection in cases where the eas components are integrated at visually accessible portions of the goods . various other changes in the foregoing articles and modifications in the described practices may be introduced without departing from the invention . the particularly preferred embodiments of the invention are thus intended in an illustrative and not limiting sense . the true spirit and scope of the invention is set forth in the following claims .