LOAN AGREEMENT

Exhibit 4.1

LOAN AGREEMENT

BETWEEN:

Here after referred to as the ‘’Lender’’, on the one hand,

AND

Here after referred to as the ‘’Borrower’’ on the other hand

WHEREAS:

THE PARTIES HAVE AGREED AS FOLLOWS:

Article 1 – Amount

The Lender agrees under terms and conditions hereinafter set forth to provide the Borrower with an unsecured loan subordinate to the Senior Secured Convertible Note issued by the Borrower on March 29, 2012 in the principal amount of € 1,000,000.00 and the Borrower hereby agrees to borrow this principal amount of € 1,000,000.00 from the Lender.

The Lender agrees that this amount will be made available to the Borrower before May 30, 2013 by transferring, on behalf of the Borrower, in total € 1,000,000.00 to the account of Borrower.

Article 2 – Interest

Interest will be calculated from the date of receipt of the money in the accounts of the Borrower. Payment is due every 3 months in arrear at a rate of 12 percent per annum, with the last interest payment due on the repayment date of the principal amount. The interest calculation is to be done on a 365/365 days basis.

Article 3 - Repayment of principal

The Borrower shall repay the outstanding principal amount in full, including the last 3 months of interest, 365 days after final receipt of the loan amount in its accounts.

Article 4 - Prepayment

The Borrower shall only be allowed to prepay the outstanding principal amount without any penalty being due with the consent of the Lender.

Article 5 - Payment

Payments of interest, principal amounts or other amounts due hereunder shall be remitted without any deduction for or on account of any tax whatsoever by transfer of immediately available funds to a bank account of the Lender designated by the Lender in writing to the Borrower.

Any payments by the Borrower hereunder shall be applied first to payment of accrued and unpaid interest through the date of payment and then to the payment of the outstanding principal balance of the loan.

Article 6 –Warrant coverage

Upon receipt of the loan amount in the accounts of the Borrower, the Borrower will issue a warrant to the Lender to purchase 1,253,194 restricted shares of common stock of the Borrower. The exercise price of the warrant will be US$ 1.03. The warrant shall be exercisable for a term for 5 years from the date of issuance of the warrant. The warrant can only be exercised against cash payment. The exercise will be mandatory after one year of issuance once the stock price, measured as an average of the closing bid price of 10 preceding trading days, is more than US$ 1.55.

Article 7 – Defaults

The outstanding principal amount and all interest and all costs shall become immediately due and payable to the Lender upon issuance of a simple payment order in the name of the Lender to the Borrower if and when:

Article 8 - Notices

All notices which are required or may be given pursuant to the terms of this agreement shall be in writing and shall be deemed given when delivered by hand or, if given by telecopy or telefax, when sent or, if mailed, shall be deemed given five (5) days after the date when sent by registered or certified mail, postage prepaid. The addresses of the parties hereto for purposes of notices, requests, demands and other communications are as set out at the beginning of this agreement or such other address as any party hereto shall have designated by notice in writing to the other party hereto.

Article 9 – Miscellaneous

The Lender is entitled to assign its rights and obligations under this agreement to a third party.

The Borrower undertakes at all times to render its cooperation in an assignment by the Lender of all or part of the loan and to acknowledge such assignment in writing and without any reservations.

Article 10 - Governing Law

This agreement shall entirely be governed by and construed in accordance with the laws of the Netherlands.

Article 11 - Jurisdiction

Any and all disputes arising from or connected with this agreement or any amendment thereof shall be settled exclusively by the competent court of Amsterdam.

This Agreement shall be signed in 2 (two) original copies or may be executed by Parties signatures transmitted by facsimile or electronic format, and copies of this Agreement so executed and delivered shall have the same force and effect as originals.

IN WITHNESS WHEREOF, the Parties hereto have caused this Agreement to be executed as of May 24, 2013.

ADDENDUM TO THE LOAN AGREEMENT D.D. May 24 2013

BETWEEN:

Hereafter referred to as the ‘’Lender’’, on the one hand,

AND

Here after referred to as the ‘’Borrower’’ on the other hand

WHEREAS:

THE PARTIES HAVE AGREED AS FOLLOWS:

Article 1 –Conversion and termination

The loan will be terminated per July 15, 2013. The principal amount will per that date be converted in restricted shares of the Borrower and issued the Lender. The conversion of the principal amount of € 1,000,000 in ETAK shares will be effectuated against the €/US$ exchange rate of Friday 12, 2013 and the closing price of ETAK on Friday 12, 2013, being US$ 0.71. Interest will be due by the Borrower to the Lender till the date of termination.

The Lender agrees that the ETAK warrant issued under number L1 and as attached to this Amendment will be cancelled per the date of termination of the Loan Agreement and that the Lender is not entitled anymore to any right of this warrant per the same date.

Article 2 – Necessary approvals

The termination and conversion in ETAK shares of the loan is subject to the following approvals;

This Amendment of the Agreement shall be signed in 2 (two) original copies or may be executed by Parties signatures transmitted by facsimile or electronic format, and copies of this Agreement so executed and delivered shall have the same force and effect as originals.

IN WITHNESS WHEREOF, the Parties hereto have caused this Agreement to be executed as of July 14, 2013.