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Exhibit 24.1 SPECIAL POWER OF ATTORNEY The undersigned constitutes and appoints Christopher S. Alexander and John W. Smolak, and each
of them, his true and lawful attorney-in-fact and agent with full power of substitution and
resubstitution, for him and in his name, place, and stead, in any and all capacities, to sign the
Annual Report on Form 10-K for the fiscal year ended December 31, 2004, for filing with the
Securities and Exchange Commission by Hypercom Corporation, a Delaware corporation, together with
any and all amendments to such Form 10-K, and to file the same with all exhibits thereto, and all
documents in connection therewith, with the Securities and Exchange Commission, granting to such
attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and
every act and thing requisite and necessary to be done in and about the premises, as fully and to
all intents and purposes as he might or could do in person, hereby ratifying and confirming all
that such attorneys-in-fact and agents, or each of them, may lawfully do or cause to be done by
virtue hereof. DATED:          March 1, 2005  /s/ Phillip J. Riese
Phillip J. Riese  STATE OF ARIZONA
    
    
    ))County of Maricopa
    
    
    )
  On this 1st day of March, 2005, before me, the undersigned Notary Public, personally appeared
Phillip J. Riese, known to me to be the person whose name is subscribed to the within instrument
and acknowledged that he executed the same for the purposes therein contained. IN WITNESS WHEREOF, I hereunto set my hand and official seal. /s/ Michael S. RaffordNotary Public
 My commission expires: June 13, 2008




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SPECIAL POWER OF ATTORNEY The undersigned constitutes and appoints Christopher S. Alexander and John W. Smolak, and each
of them, his true and lawful attorney-in-fact and agent with full power of substitution and
resubstitution, for him and in his name, place, and stead, in any and all capacities, to sign the
Annual Report on Form 10-K for the fiscal year ended December 31, 2004, for filing with the
Securities and Exchange Commission by Hypercom Corporation, a Delaware corporation, together with
any and all amendments to such Form 10-K, and to file the same with all exhibits thereto, and all
documents in connection therewith, with the Securities and Exchange Commission, granting to such
attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and
every act and thing requisite and necessary to be done in and about the premises, as fully and to
all intents and purposes as he might or could do in person, hereby ratifying and confirming all
that such attorneys-in-fact and agents, or each of them, may lawfully do or cause to be done by
virtue hereof. DATED:          March 1, 2005  /s/ Norman Stout
Norman Stout  STATE OF ARIZONA
    
    
    ))County of Maricopa
    
    
    )
  On this 1st day of March, 2005, before me, the undersigned Notary Public, personally appeared
Norman Stout, known to me to be the person whose name is subscribed to the within instrument and
acknowledged that he executed the same for the purposes therein contained. IN WITNESS WHEREOF, I hereunto set my hand and official seal. /s/ Michael S. RaffordNotary Public
 My commission expires: June 13, 2008 2




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SPECIAL POWER OF ATTORNEY The undersigned constitutes and appoints Christopher S. Alexander and John W. Smolak, and each
of them, his true and lawful attorney-in-fact and agent with full power of substitution and
resubstitution, for him and in his name, place, and stead, in any and all capacities, to sign the
Annual Report on Form 10-K for the fiscal year ended December 31, 2004, for filing with the
Securities and Exchange Commission by Hypercom Corporation, a Delaware corporation, together with
any and all amendments to such Form 10-K, and to file the same with all exhibits thereto, and all
documents in connection therewith, with the Securities and Exchange Commission, granting to such
attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and
every act and thing requisite and necessary to be done in and about the premises, as fully and to
all intents and purposes as he might or could do in person, hereby ratifying and confirming all
that such attorneys-in-fact and agents, or each of them, may lawfully do or cause to be done by
virtue hereof. DATED:          March 1, 2005  /s/ Daniel D. Diethelm
Daniel D. Diethelm  STATE OF ARIZONA
    
    
    ))County of Maricopa
    
    
    )
  On this 1st day of March, 2005, before me, the undersigned Notary Public, personally appeared
Daniel D. Diethelm, known to me to be the person whose name is subscribed to the within instrument
and acknowledged that he executed the same for the purposes therein contained. IN WITNESS WHEREOF, I hereunto set my hand and official seal. /s/ Michael S. RaffordNotary Public
 My commission expires: June 13, 2008 3




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SPECIAL POWER OF ATTORNEY The undersigned constitutes and appoints Christopher S. Alexander and John W. Smolak, and each
of them, his true and lawful attorney-in-fact and agent with full power of substitution and
resubstitution, for him and in his name, place, and stead, in any and all capacities, to sign the
Annual Report on Form 10-K for the fiscal year ended December 31, 2004, for filing with the
Securities and Exchange Commission by Hypercom Corporation, a Delaware corporation, together with
any and all amendments to such Form 10-K, and to file the same with all exhibits thereto, and all
documents in connection therewith, with the Securities and Exchange Commission, granting to such
attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and
every act and thing requisite and necessary to be done in and about the premises, as fully and to
all intents and purposes as he might or could do in person, hereby ratifying and confirming all
that such attorneys-in-fact and agents, or each of them, may lawfully do or cause to be done by
virtue hereof. DATED:          March 1, 2005  /s/ William C. Keiper
William C. Keiper  STATE OF ARIZONA
    
    
    ))County of Maricopa
    
    
    )
  On this 1st day of March, 2005, before me, the undersigned Notary Public, personally appeared
William C. Keiper, known to me to be the person whose name is subscribed to the within instrument
and acknowledged that he executed the same for the purposes therein contained. IN WITNESS WHEREOF, I hereunto set my hand and official seal. /s/ Michael S. RaffordNotary Public
 My commission expires: June 13, 2008 4