About Technical Systems Testing (TST)
Technical Systems Testing (TST) was a gaming certification laboratory founded in 1993 and acquired by Gaming Laboratories International (GLI) on May 26, 2010. The TST brand and all logos were phased out in September 2012, and TST is no longer in operation as a standalone certification body. Players still seeing TST seals on older casino footers should verify current certification through the casino’s regulator and the successor GLI Certified Mark.
At the time of acquisition, TST was led by CEO Salim L. Adatia and CTO Noah Turner, operating from four lab locations: London, Macau, Manila, and Vancouver. The company had built a reputation across 1993–2010 as a leader in interactive gaming testing and wagering system certification.
What TST Certified (Historical Scope, 1993–2012)
During its operational period, TST covered the standard gaming testing portfolio: Random Number Generator statistical analysis, game mathematics and Return-to-Player verification, source-code review, interactive gaming systems (online casino platforms and multi-player engines), live dealer table integration, wagering system certification for sportsbook and lottery products, and land-based gaming device audits.
TST was approved as a test lab in pioneering iGaming jurisdictions including Alderney, the Isle of Man, First Cagayan (Philippines), the United Kingdom, and the Canadian provinces of British Columbia and Québec.
Three broad product categories sat within TST’s historical scope:
- Online RNG, game mathematics, and game integrity
- Multi-player platforms — live casino, sportsbook, poker tournaments
- Land-based slot machines, ETG terminals, lottery systems
2010–2012 GLI Acquisition and Phase-Out Timeline
On May 26, 2010, GLI Group announced the acquisition of all assets, intellectual property, and trade names of Technical Systems Testing. GLI created a new GLI Interactive B.V. division to absorb TST’s interactive gaming expertise, with Phillip Barow (then GLI Europe Managing Director) becoming the new division’s MD.
TST continued operating under its own brand for roughly 28 months post-acquisition. In June 2011, GLI and “TST, A GLI Company” jointly released GLI-19 — the first global standard for interactive gaming systems.
Per the official GLI Gaming Labs Certified Mark FAQs (Revision 7.0, June 2016): “Technical Systems Testing (TST) was acquired by GLI therefore all TST marks and logos were phased out in September of 2012.” All TST mark holders were directed to apply for the successor Gaming Labs Certified Mark via gaminglabs.com.
Where Successor Certification Lives Today
Since September 2012, the GLI Certified Mark (also called Gaming Labs Certified®) is the active successor to TST’s certification framework. GLI assumes all certificate validity and ongoing surveillance for products previously TST-marked, plus all new certification work.
For casino players, this means any TST seal still displayed on an older casino footer reflects legacy branding rather than current 2026 certification. The active verification path runs through the casino’s license-issuing regulator and the successor Gaming Labs Certified Mark register, not through any standalone TST verification.
Frequently Asked Questions
What does TST stand for in online casino certification?
Is TST still an active casino certification body in 2026?
What should I do if a casino still shows a TST seal?
Final Take
TST holds historical significance as one of the earliest interactive gaming certification specialists (1993 founding) and a contributor to GLI-19 (2011). For 2026 casino verification purposes, however, TST is a defunct brand — the Gaming Labs Certified Mark is the active successor.
If you encounter a TST seal today, treat it as legacy branding and verify through the casino’s regulator and the active GLI Certification register, not through any standalone TST verification path.
