Exhibit 31.1
 
 CERTIFICATIONS
  1)
    
    I have reviewed this Amendment No. 1 to the Annual
Report on Form 10-K of TeleCommunication Systems,
Inc.;2)
    
    Based on my knowledge, this report does not contain
any untrue statement of a material fact or omit to
state a material fact necessary to make the
statements made, in light of the circumstances under
which such statements were made, not misleading with
respect to the period covered by this report;3)
    
    Based on my knowledge, the financial statements, and
other financial information included in this report,
fairly present in all material respects the
financial condition, results of operations and cash
flows of the registrant as of, and for, the periods
presented in this report;4)
    
    The registrants other certifying officers and I are
responsible for establishing and maintaining
disclosure controls and procedures (as defined in
Exchange Act Rules 13a-15(e) and 15d-15(e)) and
internal control over financial reporting (as
defined in Exchange Act Rules 13a-15(f) and
15d-15(f)) for the registrant and have:
 a)
    
    designed such disclosure controls
and procedures, or caused such
disclosure controls and procedures
to be designed under our
supervision, to ensure that material
information relating to the
registrant, including its
consolidated subsidiaries, is made
known to us by others within those
entities, particularly during the
period in which this report is being
prepared;b)
    
    designed such internal control over
financial reporting, or caused such
internal control over financial
reporting to be designed under our
supervision, to provide reasonable
assurance regarding the reliability
of financial reporting and the
preparation of financial statements
for external purposes in accordance
with generally accepted accounting
principles;c)
    
    evaluated the effectiveness of the
registrants disclosure controls and
procedures and presented in this
report our conclusions about the
effectiveness of the disclosure
controls and procedures, as of the
end of the period covered by this
report based on such evaluation; andd)
    
    disclosed in this report any change
in the registrants internal control
over financial reporting that
occurred during the registrants
most recent fiscal quarter (the
registrants fourth fiscal quarter
for the year ended December 31,
2008) that has materially affected
or is reasonably likely to
materially affect the registrants
internal control over financial
reporting; and
 5)
    
    The registrants other certifying officer(s) and I
have disclosed, based on our most recent evaluation
of internal control over financial reporting, to the
registrants auditors and the audit committee of
registrants board of directors (or persons
performing the equivalent functions):
 a)
    
    all significant deficiencies and
material weaknesses in the design or
operation of internal control over
financial reporting which are
reasonably likely to adversely
affect the registrants ability to
record, process, summarize and
report financial information; andb)
    
    any fraud, whether or not material,
that involves management or other
employees who have a significant
role in the registrants internal
controls over financial reporting.
 /s/ Maurice B. ToséMaurice B. ToséChairman, CEO and PresidentDate: August 24, 2009